diff --git a/irpc-framework-core/src/main/java/org/idea/irpc/framework/core/filter/client/GroupFilterImpl.java b/irpc-framework-core/src/main/java/org/idea/irpc/framework/core/filter/client/GroupFilterImpl.java
index d0966de30b9ec40d11394377b6205fd29321b885..e161ba479125814e4b26359167fc21ea3b8619ce 100644
--- a/irpc-framework-core/src/main/java/org/idea/irpc/framework/core/filter/client/GroupFilterImpl.java
+++ b/irpc-framework-core/src/main/java/org/idea/irpc/framework/core/filter/client/GroupFilterImpl.java
@@ -19,6 +19,9 @@ public class GroupFilterImpl implements IClientFilter {
     @Override
     public void doFilter(List<ChannelFutureWrapper> src, RpcInvocation rpcInvocation) {
         String group = String.valueOf(rpcInvocation.getAttachments().get("group"));
+        if (CommonUtils.isEmpty(group)) {
+            return;
+        }
         for (ChannelFutureWrapper channelFutureWrapper : src) {
             if (!channelFutureWrapper.getGroup().equals(group)) {
                 src.remove(channelFutureWrapper);