diff --git a/sdk-amop/src/main/java/org/fisco/bcos/sdk/amop/topic/AmopMsgHandler.java b/sdk-amop/src/main/java/org/fisco/bcos/sdk/amop/topic/AmopMsgHandler.java
index 1a1fe5606..5cace8170 100644
--- a/sdk-amop/src/main/java/org/fisco/bcos/sdk/amop/topic/AmopMsgHandler.java
+++ b/sdk-amop/src/main/java/org/fisco/bcos/sdk/amop/topic/AmopMsgHandler.java
@@ -90,8 +90,7 @@ public void onConnect(ChannelHandlerContext ctx) {
 
     @Override
     public void onMessage(ChannelHandlerContext ctx, Message msg) {
-        logger.trace(
-                "receive msg, msg type:{}, content:{}", msg.getType(), new String(msg.getData()));
+        logger.trace("receive msg, msg type:{}, seq:{}", msg.getType(), msg.getSeq());
         if (!isRunning) {
             logger.warn("Amop on msg, amop is not running, exit.");
         }
diff --git a/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelImp.java b/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelImp.java
index 3756cf79e..580165c25 100644
--- a/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelImp.java
+++ b/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelImp.java
@@ -330,6 +330,7 @@ public void asyncSendToRandom(Message out, ResponseCallback callback, Options op
         if (peerList.size() == 0) {
             logger.warn(
                     "no available peer to send to, seq: {}, type: {}", out.getSeq(), out.getType());
+            return;
         }
         int random = (int) (Math.random() * (peerList.size()));
         String peerIpPort = peerList.get(random);
diff --git a/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelMsgHandler.java b/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelMsgHandler.java
index d876c3cfb..90d959cee 100644
--- a/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelMsgHandler.java
+++ b/sdk-core/src/main/java/org/fisco/bcos/sdk/channel/ChannelMsgHandler.java
@@ -120,7 +120,7 @@ public void onConnect(ChannelHandlerContext ctx) {
 
     @Override
     public void onMessage(ChannelHandlerContext ctx, Message msg) {
-        logger.trace(
+        logger.debug(
                 "onMessage in ChannelMsgHandler called, host : {}, seq : {}, msgType : {}",
                 ChannelVersionNegotiation.getPeerHost(ctx),
                 msg.getSeq(),
@@ -144,15 +144,16 @@ public void onMessage(ChannelHandlerContext ctx, Message msg) {
             response.setCtx(ctx);
             callback.onResponse(response);
         } else {
-            logger.trace(
-                    " receive message, no callback, try call handler, seq:{} , type: {}, result: {}",
-                    msg.getSeq(),
-                    (int) msg.getType(),
-                    msg.getResult());
             MsgHandler msgHandler = msgHandlers.get(msg.getType().intValue());
             if (msgHandler != null) {
+                logger.trace(
+                        " receive message, no callback, call handler, seq:{} , type: {}, result: {}",
+                        msg.getSeq(),
+                        (int) msg.getType(),
+                        msg.getResult());
                 msgHandler.onMessage(ctx, msg);
             }
+            logger.debug(" call ");
         }
     }