diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/MasterOpExecutor.java b/fe/fe-core/src/main/java/org/apache/doris/qe/MasterOpExecutor.java
index 9ff3acecdd..23f11f4117 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/MasterOpExecutor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/MasterOpExecutor.java
@@ -303,7 +303,9 @@ public class MasterOpExecutor {
                         .put(TTransportException.UNKNOWN, "Unknown exception")
                         .put(TTransportException.NOT_OPEN, "Connection is not open")
                         .put(TTransportException.ALREADY_OPEN, "Connection has already opened up")
-                        .put(TTransportException.TIMED_OUT, "Connection timeout")
+                        .put(TTransportException.TIMED_OUT,
+                                "Connection timeout, please check network state or enlarge session variable:"
+                                        + "`query_timeout`/`insert_timeout`")
                         .put(TTransportException.END_OF_FILE, "EOF")
                         .put(TTransportException.CORRUPTED_DATA, "Corrupted data")
                         .build();