diff --git a/src/sql/engine/prepare/ob_deallocate_executor.cpp b/src/sql/engine/prepare/ob_deallocate_executor.cpp
index d0d77d0f55c7884c24d6c5bacb75f872c6e96e09..113291a14ab3f74a7ccfcf17554051c926fe070d 100644
--- a/src/sql/engine/prepare/ob_deallocate_executor.cpp
+++ b/src/sql/engine/prepare/ob_deallocate_executor.cpp
@@ -29,8 +29,8 @@ int ObDeallocateExecutor::execute(ObExecContext& ctx, ObDeallocateStmt& stmt)
   } else {
     if (OB_FAIL(ctx.get_my_session()->remove_prepare(stmt.get_prepare_name()))) {
       LOG_WARN("failed to remove prepare", K(stmt.get_prepare_name()), K(ret));
-    } else if (OB_FAIL(ctx.get_my_session()->remove_ps_session_info(stmt.get_prepare_id()))) {
-      LOG_WARN("failed to remove prepare", K(stmt.get_prepare_id()), K(ret));
+    } else if (OB_FAIL(ctx.get_my_session()->close_ps_stmt(stmt.get_prepare_id()))) {
+      LOG_WARN("fail to deallocate ps stmt", K(ret), K(stmt.get_prepare_id()));
     } else { /*do nothing*/
     }
   }