diff --git a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxRoutingService.cs b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxRoutingService.cs
index 0b364785..9fec047c 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxRoutingService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxRoutingService.cs
@@ -368,6 +368,13 @@ public partial class CoreConfigSingboxService
             return Global.ProxyTag;
         }
 
+        var tag = Global.ProxyTag + node.IndexId.ToString();
+        if (singboxConfig.outbounds.Any(o => o.tag == tag)
+            || (singboxConfig.endpoints != null && singboxConfig.endpoints.Any(e => e.tag == tag)))
+        {
+            return tag;
+        }
+
         var server = await GenServer(node);
         if (server is null)
         {
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayRoutingService.cs b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayRoutingService.cs
index 1cb46bf2..d39ea833 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayRoutingService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayRoutingService.cs
@@ -131,10 +131,16 @@ public partial class CoreConfigV2rayService
             return Global.ProxyTag;
         }
 
+        var tag = Global.ProxyTag + node.IndexId.ToString();
+        if (v2rayConfig.outbounds.Any(p => p.tag == tag))
+        {
+            return tag;
+        }
+
         var txtOutbound = EmbedUtils.GetEmbedText(Global.V2raySampleOutbound);
         var outbound = JsonUtils.Deserialize<Outbounds4Ray>(txtOutbound);
         await GenOutbound(node, outbound);
-        outbound.tag = Global.ProxyTag + node.IndexId.ToString();
+        outbound.tag = tag;
         v2rayConfig.outbounds.Add(outbound);
 
         return outbound.tag;