diff --git a/v2rayN/ServiceLib/Models/ProfileItem.cs b/v2rayN/ServiceLib/Models/ProfileItem.cs
index da34600b..8f883535 100644
--- a/v2rayN/ServiceLib/Models/ProfileItem.cs
+++ b/v2rayN/ServiceLib/Models/ProfileItem.cs
@@ -109,6 +109,42 @@ public class ProfileItem : ReactiveObject
         return true;
     }
 
+    public async Task<bool> HasCycle(HashSet<string> visited, HashSet<string> stack)
+    {
+        if (ConfigType < EConfigType.Group)
+            return false;
+
+        if (stack.Contains(IndexId))
+            return true;
+
+        if (visited.Contains(IndexId))
+            return false;
+
+        visited.Add(IndexId);
+        stack.Add(IndexId);
+
+        if (ProfileGroupItemManager.Instance.TryGet(IndexId, out var group)
+            && !group.ChildItems.IsNullOrEmpty())
+        {
+            var childProfiles = (await Task.WhenAll(
+                    Utils.String2List(group.ChildItems)
+                        .Where(p => !p.IsNullOrEmpty())
+                        .Select(AppManager.Instance.GetProfileItem)
+                ))
+                .Where(p => p != null)
+                .ToList();
+
+            foreach (var child in childProfiles)
+            {
+                if (await child.HasCycle(visited, stack))
+                    return true;
+            }
+        }
+
+        stack.Remove(IndexId);
+        return false;
+    }
+
     #endregion function
 
     [PrimaryKey]
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
index bd03b4c8..8bc93e71 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
@@ -217,9 +217,15 @@ public partial class CoreConfigSingboxService
             {
                 return -1;
             }
+
+            var hasCycle = await node.HasCycle(new HashSet<string>(), new HashSet<string>());
+            if (hasCycle)
+            {
+                return -1;
+            }
+
             // remove custom nodes
             // remove group nodes for proxy chain
-            // avoid self-reference
             var childProfiles = (await Task.WhenAll(
                     Utils.String2List(profileGroupItem.ChildItems)
                         .Where(p => !p.IsNullOrEmpty())
@@ -230,7 +236,6 @@ public partial class CoreConfigSingboxService
                     && p.IsValid()
                     && p.ConfigType != EConfigType.Custom
                     && (node.ConfigType == EConfigType.PolicyGroup || p.ConfigType < EConfigType.Group)
-                    && p.IndexId != node.IndexId
                 )
                 .ToList();
 
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
index b250e01d..3d6597ae 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
@@ -493,6 +493,13 @@ public partial class CoreConfigV2rayService
             {
                 return -1;
             }
+
+            var hasCycle = await node.HasCycle(new HashSet<string>(), new HashSet<string>());
+            if (hasCycle)
+            {
+                return -1;
+            }
+
             // remove custom nodes
             // remove group nodes for proxy chain
             var childProfiles = (await Task.WhenAll(