diff --git a/workspace-gateway/src/main/java/com/aliware/tianchi/UserLoadBalance.java b/workspace-gateway/src/main/java/com/aliware/tianchi/UserLoadBalance.java
index 954c85eac5ce493d605814b52e45186b9ecdced2..dfba0e64640e3c2b00adceef8145faf377ab63a1 100644
--- a/workspace-gateway/src/main/java/com/aliware/tianchi/UserLoadBalance.java
+++ b/workspace-gateway/src/main/java/com/aliware/tianchi/UserLoadBalance.java
@@ -16,7 +16,6 @@ public class UserLoadBalance implements LoadBalance {
 
     @Override
     public <T> Invoker<T> select(List<Invoker<T>> invokers, URL url, Invocation invocation) throws RpcException {
-        System.out.println("use user loadbalance");
         return invokers.get(ThreadLocalRandom.current().nextInt(invokers.size()));
     }
 }
diff --git a/workspace-provider/src/main/java/com/aliware/tianchi/CallbackServiceImpl.java b/workspace-provider/src/main/java/com/aliware/tianchi/CallbackServiceImpl.java
index ce0e419e49ccb7e4fa970994bb6c5ea5ecd94499..1c4a45dd27e10fce709d2822552c006af62f93f3 100644
--- a/workspace-provider/src/main/java/com/aliware/tianchi/CallbackServiceImpl.java
+++ b/workspace-provider/src/main/java/com/aliware/tianchi/CallbackServiceImpl.java
@@ -1,6 +1,5 @@
 package com.aliware.tianchi;
 
-import org.apache.dubbo.common.extension.SPI;
 import org.apache.dubbo.rpc.listener.CallbackListener;
 import org.apache.dubbo.rpc.service.CallbackService;