diff --git a/fe/fe-core/src/main/java/org/apache/doris/mtmv/MTMVJobManager.java b/fe/fe-core/src/main/java/org/apache/doris/mtmv/MTMVJobManager.java
index 67a5bbe4db5294..971bbfa3501653 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/mtmv/MTMVJobManager.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/mtmv/MTMVJobManager.java
@@ -143,8 +143,18 @@ public void dropJob(MTMV mtmv, boolean isReplay) {
     }
 
     public void alterJob(MTMV mtmv, boolean isReplay) {
-        dropJob(mtmv, isReplay);
-        createJob(mtmv, isReplay);
+        MTMVJob oldJob = getJobByMTMV(mtmv);
+        if (!isReplay && oldJob != null) {
+            oldJob.writeLock();
+        }
+        try {
+            dropJob(mtmv, isReplay);
+            createJob(mtmv, isReplay);
+        } finally {
+            if (!isReplay && oldJob != null) {
+                oldJob.writeUnlock();
+            }
+        }
     }
 
     /**