diff --git a/docs/Tasktracking/2026-04-26-batch-edit-clients.md b/docs/Tasktracking/2026-04-26-batch-edit-clients.md
new file mode 100644
index 00000000..0ff88094
--- /dev/null
+++ b/docs/Tasktracking/2026-04-26-batch-edit-clients.md
@@ -0,0 +1,60 @@
+Task Record: Batch Edit Clients
+
+Date: 2026-04-26
+Related Module: Client management (web/service, web/controller, web/html)
+Change Type: Add
+
+Background
+
+Users previously had to edit each client individually to change shared settings (flow, limit IP, total GB, expiry time, enable state, Telegram ID, comment, reset period). This was time-consuming when managing many clients in an inbound.
+
+Changes
+
+Added batch multi-select and batch editing for clients in the inbound expanded view:
+
+Backend:
+- New `BatchUpdateInboundClients` service method in `web/service/inbound.go` - updates multiple clients' common fields in one transaction, syncs client_traffics table (total, expiry_time, enable, reset, tg_id) and Xray API (enable/disable)
+- New `BatchUpdateInboundClientsForUser` authorization wrapper  
+- New `POST /panel/api/inbounds/batchUpdateClients` API route in `web/controller/inbound.go`
+- Added `toInt64` helper for JSON number type conversion
+
+Frontend:
+- New `client_batch_edit_modal.html` modal for batch editing common fields (enable, security, flow, limitIP, totalGB, expiryTime, delayedStart, reset, tgId, comment) with "keep unchanged" defaults
+- Modified `inbounds.html` expanded row: added row-selection to client table, batch action bar (batch edit, enable/disable, reset traffic, delete, deselect)
+- Added `clientSelection` reactive state and helper methods (`getClientRowKey`, `getClientRowSelection`, `getSelectedClients`, `openBatchEditClient`, `batchEnableClient`, `batchResetClientTraffic`, `batchDelClient`, `clearClientSelection`)
+
+Translations:
+- Added keys to `translate.en_US.toml` and `translate.zh_CN.toml`: batchEdit, batchEditAlert, batchKeep, batchEditNoFields, batchDeselect, batchDeleteLastClient, selected
+
+Fields explicitly NOT batch-editable (enforced both frontend and backend):
+- email (unique identifier for traffic tracking)
+- id (protocol-specific client UUID)
+- subId (subscription identifier)
+- password (Trojan client password)
+
+Impact
+
+Affected files:
+- `web/service/inbound.go` (+~210 lines)
+- `web/controller/inbound.go` (+~30 lines)
+- `web/html/inbounds.html` (~+90 lines in methods, +15 lines in template)
+- `web/html/modals/client_batch_edit_modal.html` (new, 209 lines)
+- `web/translation/translate.en_US.toml` (+8 keys)
+- `web/translation/translate.zh_CN.toml` (+8 keys)
+
+No database schema changes. No config changes. No breaking API changes (new route only).
+
+Verification
+
+- `go build ./...` - passes
+- `CGO_ENABLED=1 go build` - passes
+- `go vet ./...` - passes
+- `gofmt -d` - no formatting issues
+
+Not verified: runtime integration testing (requires running panel with Xray and clients).
+
+Risks And Follow-Up
+
+- Batch delete does not prevent deleting the LAST client (only warns when trying to delete ALL remaining). The individual delete button already shows/hides based on `isRemovable()`.
+- If the Xray API call fails during batch enable/disable, the service returns `needRestart=true` which triggers Xray restart by the periodic check.
+- The batch edit modal resets all field values when reopened; no persistence across invocations.
diff --git a/web/controller/inbound.go b/web/controller/inbound.go
index ea42ffde..c64cd309 100644
--- a/web/controller/inbound.go
+++ b/web/controller/inbound.go
@@ -55,6 +55,7 @@ func (a *InboundController) initRouter(g *gin.RouterGroup) {
 	g.POST("/lastOnline", a.lastOnline)
 	g.POST("/updateClientTraffic/:email", a.updateClientTraffic)
 	g.POST("/:id/delClientByEmail/:email", a.delInboundClientByEmail)
+	g.POST("/batchUpdateClients", a.batchUpdateInboundClients)
 }
 
 // getInbounds retrieves the list of inbounds for the logged-in user.
@@ -470,6 +471,32 @@ func (a *InboundController) delInboundClientByEmail(c *gin.Context) {
 	}
 }
 
+// batchUpdateInboundClients updates multiple clients in an inbound with the same field changes.
+func (a *InboundController) batchUpdateInboundClients(c *gin.Context) {
+	var request struct {
+		InboundID    int      `json:"inboundId"`
+		ClientIDs    []string `json:"clientIds"`
+		UpdateFields string   `json:"updateFields"`
+	}
+	if err := c.ShouldBindJSON(&request); err != nil {
+		jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundUpdateSuccess"), err)
+		return
+	}
+
+	user := session.GetLoginUser(c)
+	needRestart, err := a.inboundService.BatchUpdateInboundClientsForUser(
+		user.Id, user.Role == "admin", request.InboundID, request.ClientIDs, request.UpdateFields,
+	)
+	if err != nil {
+		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
+		return
+	}
+	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundClientUpdateSuccess"), nil)
+	if needRestart {
+		a.xrayService.SetToNeedRestart()
+	}
+}
+
 // getUserInfo returns client traffic information for the logged-in user.
 func (a *InboundController) getUserInfo(c *gin.Context) {
 	user := session.GetLoginUser(c)
diff --git a/web/html/inbounds.html b/web/html/inbounds.html
index c8f7363f..971446f7 100644
--- a/web/html/inbounds.html
+++ b/web/html/inbounds.html
@@ -584,8 +584,21 @@
                       </a-popover>
                     </template>
                     <template slot="expandedRowRender" slot-scope="record">
-                      <a-table :row-key="client => client.id" :columns="isMobile ? innerMobileColumns : innerColumns"
+                      <div v-if="clientSelection[record.id] && clientSelection[record.id].length > 0 && record.isMultiUser()" :style="{ marginBottom: '8px', display: 'flex', gap: '8px', alignItems: 'center' }">
+                        <span :style="{ marginInlineEnd: '8px' }">[[ clientSelection[record.id].length ]] {{ i18n "selected" }}</span>
+                        <a-button size="small" type="primary" @click="openBatchEditClient(record.id)">{{ i18n "pages.client.batchEdit" }}</a-button>
+                        <a-button size="small" @click="batchEnableClient(record.id, true)">{{ i18n "enable" }}</a-button>
+                        <a-button size="small" @click="batchEnableClient(record.id, false)">{{ i18n "disabled" }}</a-button>
+                        <a-button size="small" @click="batchResetClientTraffic(record.id)">{{ i18n "pages.inbounds.resetTraffic" }}</a-button>
+                        <a-popconfirm @confirm="batchDelClient(record.id)" title='{{ i18n "pages.inbounds.deleteClientContent"}}' :overlay-class-name="themeSwitcher.currentTheme" ok-text='{{ i18n "delete"}}' ok-type="danger" cancel-text='{{ i18n "cancel"}}'>
+                          <a-icon slot="icon" type="question-circle-o" :style="{ color: '#e04141' }"></a-icon>
+                          <a-button size="small" type="danger">{{ i18n "delete" }}</a-button>
+                        </a-popconfirm>
+                        <a-button size="small" @click="clearClientSelection(record.id)">{{ i18n "pages.client.batchDeselect" }}</a-button>
+                      </div>
+                      <a-table :row-key="client => getClientRowKey(record.protocol, client)" :columns="isMobile ? innerMobileColumns : innerColumns"
                         :data-source="getInboundClients(record)" :pagination=pagination(getInboundClients(record))
+                        :row-selection="getClientRowSelection(record)"
                         :style="{ margin: `-10px ${isMobile ? '2px' : '22px'} -11px` }">
                         {{template "component/aClientTable"}}
                       </a-table>
@@ -617,6 +630,7 @@
 {{template "modals/inboundInfoModal"}}
 {{template "modals/clientsModal"}}
 {{template "modals/clientsBulkModal"}}
+{{template "modals/clientBatchEditModal"}}
 <script>
   const columns = [{
     title: "ID",
@@ -761,6 +775,7 @@
       currentUsername: {{ printf "%q" .current_username }},
       clientEmailOptions: [],
       loadFailed: false,
+      clientSelection: {},
     },
     methods: {
       loading(spinning = true) {
@@ -1612,6 +1627,115 @@
           this.loadingStates.spinning = false;
         }
       },
+      getClientRowKey(protocol, client) {
+        switch (protocol) {
+          case Protocols.TROJAN: return 'p_' + client.password;
+          case Protocols.SHADOWSOCKS: return 'e_' + client.email;
+          default: return client.id;
+        }
+      },
+      getClientRowSelection(dbInbound) {
+        if (!dbInbound || !dbInbound.isMultiUser()) return null;
+        const inboundId = dbInbound.id;
+        return {
+          selectedRowKeys: this.clientSelection[inboundId] || [],
+          onChange: (selectedRowKeys) => {
+            this.$set(this.clientSelection, inboundId, selectedRowKeys);
+          },
+          columnWidth: '32px',
+        };
+      },
+      getSelectedClients(inboundId) {
+        const dbInbound = this.dbInbounds.find(row => row.id === inboundId);
+        if (!dbInbound) return [];
+        const clients = this.getInboundClients(dbInbound);
+        if (!clients || !Array.isArray(clients)) return [];
+        const selectedKeys = this.clientSelection[inboundId] || [];
+        return clients.filter(c => selectedKeys.includes(this.getClientRowKey(dbInbound.protocol, c)));
+      },
+      clearClientSelection(inboundId) {
+        this.$set(this.clientSelection, inboundId, []);
+      },
+      openBatchEditClient(inboundId) {
+        const dbInbound = this.dbInbounds.find(row => row.id === inboundId);
+        if (!dbInbound) return;
+        const selectedClients = this.getSelectedClients(inboundId);
+        if (selectedClients.length === 0) return;
+        const clientIds = selectedClients.map(c => this.getClientId(dbInbound.protocol, c));
+        clientBatchEditModal.show({
+          title: '{{ i18n "pages.client.batchEdit" }} - ' + dbInbound.remark,
+          okText: '{{ i18n "pages.client.submitEdit" }}',
+          dbInbound: dbInbound,
+          selectedCount: selectedClients.length,
+          confirm: async (updateData, dbInboundId) => {
+            clientBatchEditModal.loading();
+            const data = {
+              inboundId: dbInboundId,
+              clientIds: clientIds,
+              updateFields: JSON.stringify(updateData),
+            };
+            await this.submit('/panel/api/inbounds/batchUpdateClients', data, clientBatchEditModal);
+            this.clearClientSelection(inboundId);
+          },
+        });
+      },
+      async batchEnableClient(inboundId, enable) {
+        const dbInbound = this.dbInbounds.find(row => row.id === inboundId);
+        if (!dbInbound) return;
+        const selectedClients = this.getSelectedClients(inboundId);
+        if (selectedClients.length === 0) return;
+        const clientIds = selectedClients.map(c => this.getClientId(dbInbound.protocol, c));
+        this.loading();
+        const data = {
+          inboundId: inboundId,
+          clientIds: clientIds,
+          updateFields: JSON.stringify({ enable: enable }),
+        };
+        await this.submit('/panel/api/inbounds/batchUpdateClients', data, null);
+        this.clearClientSelection(inboundId);
+        this.loading(false);
+      },
+      batchResetClientTraffic(inboundId) {
+        const selectedClients = this.getSelectedClients(inboundId);
+        if (selectedClients.length === 0) return;
+        this.$confirm({
+          title: '{{ i18n "pages.inbounds.resetTraffic"}} (' + selectedClients.length + ' {{ i18n "clients" }})',
+          content: '{{ i18n "pages.inbounds.resetTrafficContent"}}',
+          class: themeSwitcher.currentTheme,
+          okText: '{{ i18n "reset"}}',
+          cancelText: '{{ i18n "cancel"}}',
+          onOk: async () => {
+            this.loading();
+            for (const client of selectedClients) {
+              await HttpUtil.post('/panel/api/inbounds/' + inboundId + '/resetClientTraffic/' + client.email);
+            }
+            this.clearClientSelection(inboundId);
+            await this.getDBInbounds();
+            this.loading(false);
+          },
+        });
+      },
+      batchDelClient(inboundId) {
+        const dbInbound = this.dbInbounds.find(row => row.id === inboundId);
+        if (!dbInbound) return;
+        const selectedClients = this.getSelectedClients(inboundId);
+        if (selectedClients.length === 0) return;
+        const remainingClients = this.getInboundClients(dbInbound);
+        if (remainingClients && remainingClients.length - selectedClients.length < 1) {
+          this.$message.warning('{{ i18n "pages.client.batchDeleteLastClient" }}');
+          return;
+        }
+        this.loading();
+        const promises = selectedClients.map(async (client) => {
+          const clientId = this.getClientId(dbInbound.protocol, client);
+          return HttpUtil.post('/panel/api/inbounds/' + inboundId + '/delClient/' + clientId);
+        });
+        Promise.all(promises).then(() => {
+          this.clearClientSelection(inboundId);
+          this.getDBInbounds();
+          this.loading(false);
+        });
+      },
       pagination(obj) {
         if (this.pageSize > 0 && obj.length > this.pageSize) {
           // Set page options based on object size
diff --git a/web/html/modals/client_batch_edit_modal.html b/web/html/modals/client_batch_edit_modal.html
new file mode 100644
index 00000000..34a8a9de
--- /dev/null
+++ b/web/html/modals/client_batch_edit_modal.html
@@ -0,0 +1,209 @@
+{{define "modals/clientBatchEditModal"}}
+<a-modal id="client-batch-edit-modal" v-model="clientBatchEditModal.visible" :title="clientBatchEditModal.title"
+    @ok="clientBatchEditModal.ok" :confirm-loading="clientBatchEditModal.confirmLoading" :closable="true" :mask-closable="false"
+    :ok-text="clientBatchEditModal.okText" cancel-text='{{ i18n "close" }}' :class="themeSwitcher.currentTheme">
+    <a-alert type="warning" :message="clientBatchEditModal.selectedCount + ' {{ i18n "pages.client.batchEditAlert" }}'" :style="{ marginBottom: '16px' }" banner show-icon></a-alert>
+    <a-form :colon="false" :label-col="{ md: {span:8} }" :wrapper-col="{ md: {span:14} }">
+        <a-form-item label='{{ i18n "pages.inbounds.enable" }}'>
+            <a-radio-group v-model="clientBatchEditModal.enable" button-style="solid">
+                <a-radio-button :value="null">{{ i18n "pages.client.batchKeep" }}</a-radio-button>
+                <a-radio-button :value="true">{{ i18n "enable" }}</a-radio-button>
+                <a-radio-button :value="false">{{ i18n "disabled" }}</a-radio-button>
+            </a-radio-group>
+        </a-form-item>
+        <a-form-item v-if="inbound.protocol === Protocols.VMESS" label='{{ i18n "security" }}'>
+            <a-select v-model="clientBatchEditModal.security" :dropdown-class-name="themeSwitcher.currentTheme" allow-clear :placeholder='{{ printf "%q" (i18n "pages.client.batchKeep") }}'>
+                <a-select-option v-for="key in USERS_SECURITY" :value="key">[[ key ]]</a-select-option>
+            </a-select>
+        </a-form-item>
+        <a-form-item label='Flow' v-if="clientBatchEditModal.inbound && clientBatchEditModal.inbound.canEnableTlsFlow()">
+            <a-select v-model="clientBatchEditModal.flow" :dropdown-class-name="themeSwitcher.currentTheme" allow-clear :placeholder='{{ printf "%q" (i18n "pages.client.batchKeep") }}'>
+                <a-select-option value="" selected>{{ i18n "none" }}</a-select-option>
+                <a-select-option v-for="key in TLS_FLOW_CONTROL" :value="key">[[ key ]]</a-select-option>
+            </a-select>
+        </a-form-item>
+        <a-form-item v-if="app.ipLimitEnable">
+            <template slot="label">
+                <a-tooltip>
+                    <template slot="title">
+                        <span>{{ i18n "pages.inbounds.IPLimitDesc" }}</span>
+                    </template>
+                    <span>{{ i18n "pages.inbounds.IPLimit" }} </span>
+                    <a-icon type="question-circle"></a-icon>
+                </a-tooltip>
+            </template>
+            <a-input-number v-model.number="clientBatchEditModal.limitIp" :min="0" :placeholder='{{ printf "%q" (i18n "pages.client.batchKeep") }}'></a-input-number>
+        </a-form-item>
+        <a-form-item>
+            <template slot="label">
+                <a-tooltip>
+                    <template slot="title">
+                        0 <span>{{ i18n "pages.inbounds.meansNoLimit" }}</span>
+                    </template>
+                    {{ i18n "pages.inbounds.totalFlow" }}
+                    <a-icon type="question-circle"></a-icon>
+                </a-tooltip>
+            </template>
+            <a-input-number v-model.number="clientBatchEditModal.totalGB" :min="0" :placeholder='{{ printf "%q" (i18n "pages.client.batchKeep") }}'></a-input-number>
+        </a-form-item>
+        <a-form-item label='{{ i18n "pages.client.delayedStart" }}'>
+            <a-radio-group v-model="clientBatchEditModal.delayedStart" button-style="solid">
+                <a-radio-button :value="null">{{ i18n "pages.client.batchKeep" }}</a-radio-button>
+                <a-radio-button :value="true">{{ i18n "enable" }}</a-radio-button>
+                <a-radio-button :value="false">{{ i18n "disabled" }}</a-radio-button>
+            </a-radio-group>
+        </a-form-item>
+        <a-form-item label='{{ i18n "pages.client.expireDays" }}' v-if="clientBatchEditModal.delayedStart === true">
+            <a-input-number v-model.number="delayedExpireDays" :min="0"></a-input-number>
+        </a-form-item>
+        <a-form-item v-else-if="clientBatchEditModal.delayedStart === false">
+            <template slot="label">
+                <a-tooltip>
+                    <template slot="title">
+                        <span>{{ i18n "pages.inbounds.leaveBlankToNeverExpire" }}</span>
+                    </template>
+                    {{ i18n "pages.inbounds.expireDate" }}
+                    <a-icon type="question-circle"></a-icon>
+                </a-tooltip>
+            </template>
+            <a-date-picker v-if="datepicker == 'gregorian'" :show-time="{ format: 'HH:mm:ss' }"
+                format="YYYY-MM-DD HH:mm:ss" :dropdown-class-name="themeSwitcher.currentTheme"
+                v-model="clientBatchEditModal.expiryTime"></a-date-picker>
+            <a-persian-datepicker v-else placeholder='{{ i18n "pages.settings.datepickerPlaceholder" }}'
+                v-model="clientBatchEditModal.expiryTime">
+            </a-persian-datepicker>
+        </a-form-item>
+        <a-form-item v-if="clientBatchEditModal.expiryTime || clientBatchEditModal.delayedStart === true">
+            <template slot="label">
+                <a-tooltip>
+                    <template slot="title">
+                        <span>{{ i18n "pages.client.renewDesc" }}</span>
+                    </template>
+                    {{ i18n "pages.client.renew" }}
+                    <a-icon type="question-circle"></a-icon>
+                </a-tooltip>
+            </template>
+            <a-input-number v-model.number="clientBatchEditModal.reset" :min="0" :placeholder='{{ printf "%q" (i18n "pages.client.batchKeep") }}'></a-input-number>
+        </a-form-item>
+        <a-form-item v-if="app.tgBotEnable">
+            <template slot="label">
+                <a-tooltip>
+                    <template slot="title">
+                        <span>{{ i18n "pages.inbounds.telegramDesc" }}</span>
+                    </template>
+                    Telegram ChatID
+                    <a-icon type="question-circle"></a-icon>
+                </a-tooltip>
+            </template>
+            <a-input-number :style="{ width: '50%' }" v-model.number="clientBatchEditModal.tgId" :min="0" :placeholder='{{ printf "%q" (i18n "pages.client.batchKeep") }}'></a-input-number>
+        </a-form-item>
+        <a-form-item label='{{ i18n "comment" }}'>
+            <a-input v-model.trim="clientBatchEditModal.comment" :placeholder='{{ printf "%q" (i18n "pages.client.batchKeep") }}'></a-input>
+        </a-form-item>
+    </a-form>
+</a-modal>
+<script>
+    const clientBatchEditModal = {
+        visible: false,
+        confirmLoading: false,
+        title: '',
+        okText: '',
+        confirm: null,
+        dbInbound: new DBInbound(),
+        inbound: new Inbound(),
+        selectedCount: 0,
+        enable: null,
+        security: undefined,
+        flow: undefined,
+        limitIp: undefined,
+        totalGB: undefined,
+        expiryTime: undefined,
+        delayedStart: null,
+        reset: undefined,
+        tgId: undefined,
+        comment: undefined,
+        ok() {
+            const updateData = {};
+            if (clientBatchEditModal.enable !== null) updateData.enable = clientBatchEditModal.enable;
+            if (clientBatchEditModal.security !== undefined) updateData.security = clientBatchEditModal.security;
+            if (clientBatchEditModal.flow !== undefined) updateData.flow = clientBatchEditModal.flow;
+            if (clientBatchEditModal.limitIp !== undefined && clientBatchEditModal.limitIp !== null) updateData.limitIp = clientBatchEditModal.limitIp;
+            if (clientBatchEditModal.totalGB !== undefined && clientBatchEditModal.totalGB !== null) {
+                updateData.totalGB = NumberFormatter.toFixed(clientBatchEditModal.totalGB * SizeFormatter.ONE_GB, 0);
+            }
+            if (clientBatchEditModal.delayedStart === true) {
+                if (clientBatchEditModalApp.delayedExpireDays > 0) {
+                    updateData.expiryTime = -86400000 * clientBatchEditModalApp.delayedExpireDays;
+                }
+            } else if (clientBatchEditModal.delayedStart === false && clientBatchEditModal.expiryTime) {
+                updateData.expiryTime = new Date(clientBatchEditModal.expiryTime).getTime();
+            }
+            if (clientBatchEditModal.reset !== undefined && clientBatchEditModal.reset !== null) updateData.reset = clientBatchEditModal.reset;
+            if (clientBatchEditModal.tgId !== undefined && clientBatchEditModal.tgId !== null) updateData.tgId = clientBatchEditModal.tgId;
+            if (clientBatchEditModal.comment !== undefined && clientBatchEditModal.comment !== null) updateData.comment = clientBatchEditModal.comment;
+
+            if (Object.keys(updateData).length === 0) {
+                clientBatchEditModalApp.$message.warning('{{ i18n "pages.client.batchEditNoFields" }}');
+                return;
+            }
+
+            ObjectUtil.execute(clientBatchEditModal.confirm, updateData, clientBatchEditModal.dbInbound.id);
+        },
+        show({
+            title = '',
+            okText = '{{ i18n "sure" }}',
+            dbInbound = null,
+            selectedCount = 0,
+            confirm = () => { }
+        }) {
+            if (!dbInbound) {
+                return;
+            }
+            this.visible = true;
+            this.title = title;
+            this.okText = okText;
+            this.confirm = confirm;
+            this.selectedCount = selectedCount;
+            this.dbInbound = new DBInbound(dbInbound);
+            this.inbound = dbInbound.toInbound();
+            this.enable = null;
+            this.security = undefined;
+            this.flow = undefined;
+            this.limitIp = undefined;
+            this.totalGB = undefined;
+            this.expiryTime = undefined;
+            this.delayedStart = null;
+            this.reset = undefined;
+            this.tgId = undefined;
+            this.comment = undefined;
+        },
+        close() {
+            clientBatchEditModal.visible = false;
+            clientBatchEditModal.loading(false);
+        },
+        loading(loading = true) {
+            clientBatchEditModal.confirmLoading = loading;
+        },
+    };
+
+    const clientBatchEditModalApp = new Vue({
+        delimiters: ['[[', ']]'],
+        el: '#client-batch-edit-modal',
+        data: {
+            clientBatchEditModal,
+            get inbound() {
+                return this.clientBatchEditModal.inbound;
+            },
+            get delayedExpireDays() {
+                return this.clientBatchEditModal.expiryTime < 0 ? this.clientBatchEditModal.expiryTime / -86400000 : 0;
+            },
+            get datepicker() {
+                return app.datepicker;
+            },
+            set delayedExpireDays(days) {
+                this.clientBatchEditModal.expiryTime = -86400000 * days;
+            },
+        },
+    });
+</script>
+{{end}}
diff --git a/web/service/inbound.go b/web/service/inbound.go
index edbb1186..98467eaf 100644
--- a/web/service/inbound.go
+++ b/web/service/inbound.go
@@ -577,6 +577,246 @@ func (s *InboundService) DelInboundClientByEmailForUser(userID int, isAdmin bool
 	return s.DelInboundClientByEmail(inboundID, email)
 }
 
+// BatchUpdateInboundClients updates multiple clients in a single inbound with the same field changes.
+// clientIDs is a list of protocol-specific client identifiers (UUID for VMess/VLESS, password for Trojan, email for SS).
+// updateFields is a JSON string containing only the fields to be updated (e.g. {"flow":"xtls-rprx-vision","limitIp":5}).
+// Fields that should NOT be batch-updated (email, id, subId, password) are ignored if present.
+func (s *InboundService) BatchUpdateInboundClients(inboundID int, clientIDs []string, updateFields string) (bool, error) {
+	if err := ensureSharedWriteAllowed(); err != nil {
+		return false, err
+	}
+
+	if len(clientIDs) == 0 {
+		return false, common.NewError("no clients specified for batch update")
+	}
+
+	var updates map[string]any
+	if err := json.Unmarshal([]byte(updateFields), &updates); err != nil {
+		return false, common.NewError("invalid update fields JSON:", err)
+	}
+
+	// Remove fields that must not be batch-updated
+	delete(updates, "email")
+	delete(updates, "id")
+	delete(updates, "subId")
+	delete(updates, "password")
+	delete(updates, "created_at")
+
+	if len(updates) == 0 {
+		return false, common.NewError("no valid fields to update")
+	}
+
+	oldInbound, err := s.GetInbound(inboundID)
+	if err != nil {
+		return false, err
+	}
+
+	var settings map[string]any
+	if err := json.Unmarshal([]byte(oldInbound.Settings), &settings); err != nil {
+		return false, err
+	}
+
+	interfaceClients, ok := settings["clients"].([]any)
+	if !ok {
+		return false, common.NewError("invalid clients format in inbound settings")
+	}
+
+	nowTs := time.Now().Unix() * 1000
+	updatedCount := 0
+	var oldEmails []string
+
+	for index, client := range interfaceClients {
+		c, ok := client.(map[string]any)
+		if !ok {
+			continue
+		}
+
+		clientId := ""
+		switch oldInbound.Protocol {
+		case "trojan":
+			if pw, ok := c["password"].(string); ok {
+				clientId = pw
+			}
+		case "shadowsocks":
+			if em, ok := c["email"].(string); ok {
+				clientId = em
+			}
+		default:
+			if id, ok := c["id"].(string); ok {
+				clientId = id
+			}
+		}
+
+		matched := false
+		for _, targetID := range clientIDs {
+			if clientId == targetID {
+				matched = true
+				break
+			}
+		}
+		if !matched {
+			continue
+		}
+
+		if email, ok := c["email"].(string); ok && email != "" {
+			oldEmails = append(oldEmails, email)
+		}
+
+		for key, value := range updates {
+			c[key] = value
+		}
+		c["updated_at"] = nowTs
+		interfaceClients[index] = c
+		updatedCount++
+	}
+
+	if updatedCount == 0 {
+		return false, common.NewError("no matching clients found")
+	}
+
+	settings["clients"] = interfaceClients
+	newSettings, err := json.MarshalIndent(settings, "", "  ")
+	if err != nil {
+		return false, err
+	}
+
+	oldInbound.Settings = string(newSettings)
+
+	db := database.GetDB()
+	tx := db.Begin()
+
+	defer func() {
+		if err != nil {
+			tx.Rollback()
+		} else {
+			tx.Commit()
+		}
+	}()
+
+	var updatesMap map[string]any
+	if err := json.Unmarshal([]byte(updateFields), &updatesMap); err != nil {
+		return false, err
+	}
+
+	if _, hasTotalGB := updatesMap["totalGB"]; hasTotalGB {
+		totalGBVal := toInt64(updatesMap["totalGB"])
+		for _, email := range oldEmails {
+			if err := tx.Model(&xray.ClientTraffic{}).Where("email = ? AND inbound_id = ?", email, inboundID).
+				Update("total", totalGBVal).Error; err != nil {
+				return false, err
+			}
+		}
+	}
+
+	if _, hasExpiryTime := updatesMap["expiryTime"]; hasExpiryTime {
+		expiryTimeVal := toInt64(updatesMap["expiryTime"])
+		for _, email := range oldEmails {
+			if err := tx.Model(&xray.ClientTraffic{}).Where("email = ? AND inbound_id = ?", email, inboundID).
+				Update("expiry_time", expiryTimeVal).Error; err != nil {
+				return false, err
+			}
+		}
+	}
+
+	if _, hasEnable := updatesMap["enable"]; hasEnable {
+		enableVal := updatesMap["enable"].(bool)
+		for _, email := range oldEmails {
+			if err := tx.Model(&xray.ClientTraffic{}).Where("email = ? AND inbound_id = ?", email, inboundID).
+				Update("enable", enableVal).Error; err != nil {
+				return false, err
+			}
+		}
+	}
+
+	if _, hasReset := updatesMap["reset"]; hasReset {
+		resetVal := int(toInt64(updatesMap["reset"]))
+		for _, email := range oldEmails {
+			if err := tx.Model(&xray.ClientTraffic{}).Where("email = ? AND inbound_id = ?", email, inboundID).
+				Update("reset", resetVal).Error; err != nil {
+				return false, err
+			}
+		}
+	}
+
+	if _, hasTgID := updatesMap["tgId"]; hasTgID {
+		tgIDVal := toInt64(updatesMap["tgId"])
+		for _, email := range oldEmails {
+			if err := tx.Model(&xray.ClientTraffic{}).Where("email = ? AND inbound_id = ?", email, inboundID).
+				Update("tg_id", tgIDVal).Error; err != nil {
+				return false, err
+			}
+		}
+	}
+
+	err = tx.Save(oldInbound).Error
+	if err != nil {
+		return false, err
+	}
+	err = bumpSharedVersion(tx)
+	if err != nil {
+		return false, err
+	}
+
+	needRestart := false
+	if _, hasEnable := updatesMap["enable"]; hasEnable {
+		s.xrayApi.Init(p.GetAPIPort())
+		enableVal := updatesMap["enable"].(bool)
+		for _, email := range oldEmails {
+			if email == "" {
+				continue
+			}
+			client := make(map[string]any)
+			for i := range interfaceClients {
+				if c, ok := interfaceClients[i].(map[string]any); ok {
+					if c["email"] == email {
+						client = c
+						break
+					}
+				}
+			}
+			if len(client) > 0 {
+				if !enableVal {
+					if err1 := s.xrayApi.RemoveUser(oldInbound.Tag, email); err1 != nil {
+						if !strings.Contains(err1.Error(), fmt.Sprintf("User %s not found.", email)) {
+							logger.Debug("Error in batch removing client by api:", err1)
+							needRestart = true
+						}
+					}
+				} else {
+					cipher := ""
+					if oldInbound.Protocol == "shadowsocks" {
+						if m, ok := settings["method"].(string); ok {
+							cipher = m
+						}
+					}
+					err1 := s.xrayApi.AddUser(string(oldInbound.Protocol), oldInbound.Tag, map[string]any{
+						"email":    client["email"],
+						"id":       client["id"],
+						"security": client["security"],
+						"flow":     client["flow"],
+						"password": client["password"],
+						"cipher":   cipher,
+					})
+					if err1 != nil {
+						logger.Debug("Error in batch adding client by api:", err1)
+						needRestart = true
+					}
+				}
+			}
+		}
+		s.xrayApi.Close()
+	}
+
+	return needRestart, nil
+}
+
+func (s *InboundService) BatchUpdateInboundClientsForUser(userID int, isAdmin bool, inboundID int, clientIDs []string, updateFields string) (bool, error) {
+	if _, err := s.GetInboundForUser(userID, isAdmin, inboundID); err != nil {
+		return false, err
+	}
+	return s.BatchUpdateInboundClients(inboundID, clientIDs, updateFields)
+}
+
 // UpdateInbound modifies an existing inbound configuration.
 // It validates changes, updates the database, and syncs with the running Xray instance.
 // Returns the updated inbound, whether Xray needs restart, and any error.
@@ -2955,3 +3195,20 @@ func (s *InboundService) DelInboundClientByEmail(inboundId int, email string) (b
 	}
 	return needRestart, nil
 }
+
+// toInt64 converts a JSON number (unmarshalled as float64) to int64.
+func toInt64(v any) int64 {
+	switch val := v.(type) {
+	case float64:
+		return int64(val)
+	case int64:
+		return val
+	case int:
+		return int64(val)
+	case json.Number:
+		n, _ := val.Int64()
+		return n
+	default:
+		return 0
+	}
+}
diff --git a/web/translation/translate.en_US.toml b/web/translation/translate.en_US.toml
index 3a93d8ec..083d085d 100644
--- a/web/translation/translate.en_US.toml
+++ b/web/translation/translate.en_US.toml
@@ -271,6 +271,14 @@
 "submitEdit" = "Save Changes"
 "clientCount" = "Number of Clients"
 "bulk" = "Add Bulk"
+"batchEdit" = "Batch Edit"
+"batchEditAlert" = "clients will be batch updated. Unique fields (email, ID, subscription) will not be modified."
+"batchKeep" = "Keep unchanged"
+"batchEditNoFields" = "No fields selected for update"
+"batchDeselect" = "Deselect all"
+"batchDeleteLastClient" = "Cannot delete all clients from an inbound"
+
+"selected" = "Selected"
 "method" = "Method"
 "first" = "First"
 "last" = "Last"
diff --git a/web/translation/translate.zh_CN.toml b/web/translation/translate.zh_CN.toml
index db937804..aedb7af2 100644
--- a/web/translation/translate.zh_CN.toml
+++ b/web/translation/translate.zh_CN.toml
@@ -271,6 +271,14 @@
 "submitEdit" = "保存修改"
 "clientCount" = "客户端数量"
 "bulk" = "批量创建"
+"batchEdit" = "批量编辑"
+"batchEditAlert" = "个客户端将被批量更新。唯一字段（邮箱、ID、订阅）不会被修改。"
+"batchKeep" = "保持原样"
+"batchEditNoFields" = "未选择要更新的字段"
+"batchDeselect" = "取消选择"
+"batchDeleteLastClient" = "不能删除入站中的全部客户端"
+
+"selected" = "已选"
 "method" = "方法"
 "first" = "置顶"
 "last" = "置底"