diff --git a/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/message/impl/MessageExchangeServiceImpl.java b/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/message/impl/MessageExchangeServiceImpl.java
index 6259db887..46d0b01ac 100644
--- a/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/message/impl/MessageExchangeServiceImpl.java
+++ b/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/message/impl/MessageExchangeServiceImpl.java
@@ -81,7 +81,7 @@ public class MessageExchangeServiceImpl implements MessageExchangeService {
     @Override
     public void removeTopic(Topic topic) throws MessageExchangeException {
         topicMap.remove(topic);
-        logger.info("remove topic: {}", topic);
+        logger.debug("remove topic: {}", topic);
     }
 
     @Override
@@ -221,7 +221,7 @@ public class MessageExchangeServiceImpl implements MessageExchangeService {
             long idle = now - topicData.getLastActiveTime();
             if (!topicData.isSubscribed() && idle > timeout) {
                 try {
-                    logger.info("cleaning idle topic: {}, idle time: {}", topicData.topic, idle);
+                    logger.debug("cleaning idle topic: {}, idle time: {}", topicData.topic, idle);
                     removeTopic(topicData.topic);
                 } catch (Exception e) {
                     logger.error("clean topic failure, topic: "+ topicData.topic, e);
diff --git a/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/web/LegacyApiController.java b/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/web/LegacyApiController.java
index 50c1bbd6d..42e98e398 100644
--- a/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/web/LegacyApiController.java
+++ b/channel/channel-server/src/main/java/com/alibaba/arthas/channel/server/web/LegacyApiController.java
@@ -188,7 +188,7 @@ public class LegacyApiController {
                 long idleTime = currentTimeMillis - entry.getValue().time;
                 boolean outdated = idleTime > topicSurvivalTimeMills;
                 if (outdated) {
-                    logger.info("Removing inactive request data, idle time: {}, sessionId: {}, request: {}", idleTime, entry.getKey(), entry.getValue());
+                    logger.debug("Removing inactive request data, idle time: {}, sessionId: {}, request: {}", idleTime, entry.getKey(), entry.getValue());
                 }
                 return outdated;
             });