diff --git a/service/topic.go b/service/topic.go
index 6d19865..24852b6 100644
--- a/service/topic.go
+++ b/service/topic.go
@@ -1,9 +1,10 @@
 package service
 
 const (
-	extTopic    = ".topic"
-	extGroup    = ".group"
-	extRpcTopic = ".rpc.topic"
+	extTopic      = ".topic"
+	extGroupTopic = ".group.topic"
+	extGroup      = ".group"
+	extRpcTopic   = ".rpc.topic"
 )
 
 // 每个服务都有自己的服务topic
@@ -25,7 +26,7 @@ func RpcTopicEx(serviceName string) string {
 }
 
 func GroupTopic(s IService) string {
-	return s.Type() + extTopic
+	return s.Type() + extGroupTopic
 }
 
 func GroupQueue(s IService) string {