diff --git a/src/memos/graph_dbs/polardb.py b/src/memos/graph_dbs/polardb.py
index ee9af485f..6f918fbf0 100644
--- a/src/memos/graph_dbs/polardb.py
+++ b/src/memos/graph_dbs/polardb.py
@@ -4883,7 +4883,7 @@ def delete_node_by_prams(
                 SELECT * FROM cypher('{self.db_name}_graph', $$
                 MATCH (n:Memory)
                 WHERE {ids_where}
-                DETACH DELETE n
+                DELETE n
                 $$) AS (result agtype)
             """