diff --git a/src/rootserver/ob_ddl_service.cpp b/src/rootserver/ob_ddl_service.cpp
index e427664fb..6fcb3527e 100755
--- a/src/rootserver/ob_ddl_service.cpp
+++ b/src/rootserver/ob_ddl_service.cpp
@@ -21855,6 +21855,7 @@ int ObDDLService::swap_orig_and_hidden_table_state(obrpc::ObAlterTableArg &alter
               LOG_WARN("mview version is old", KR(ret), K(alter_table_arg.mview_refresh_info_),
                        K(mview_info));
             } else {
+              DEBUG_SYNC(BEFORE_MV_FINISH_COMPLETE_REFRESH);
               mview_info.set_last_refresh_scn(refresh_scn_val);
               mview_info.set_last_refresh_type(share::schema::ObMVRefreshType::COMPLETE);
               mview_info.set_last_refresh_date(start_time);
diff --git a/src/share/ob_debug_sync_point.h b/src/share/ob_debug_sync_point.h
index c168fe971..787fa9cc1 100755
--- a/src/share/ob_debug_sync_point.h
+++ b/src/share/ob_debug_sync_point.h
@@ -672,6 +672,7 @@ class ObString;
     ACT(BEFOR_PREPARE_CREATE_TFS_INDEX_WORD_DOC,)\
     ACT(BEFOR_PREPARE_CREATE_TFS_INDEX_DOC_WORD,)\
     ACT(AFTER_JOIN_LEARNER_LIST_FOR_SPECIFIED_SERVER,)\
+    ACT(BEFORE_MV_FINISH_COMPLETE_REFRESH,)\
     ACT(MAX_DEBUG_SYNC_POINT,)
 
 DECLARE_ENUM(ObDebugSyncPoint, debug_sync_point, OB_DEBUG_SYNC_POINT_DEF);