diff --git a/session-dealer/mysql/session.go b/session-dealer/mysql/session.go
index b2194da..11c0706 100644
--- a/session-dealer/mysql/session.go
+++ b/session-dealer/mysql/session.go
@@ -181,7 +181,7 @@ func (ms *MysqlSession) readFromClient(seqID int64, bytes []byte) {
 		}
 
 		if ms.beginSeqID == -1 {
-			log.Warnf("cover range is empty")
+			log.Debug("cover range is empty")
 			return
 		}