diff --git a/be/src/vec/aggregate_functions/aggregate_function_map.h b/be/src/vec/aggregate_functions/aggregate_function_map.h
index befe0df162..e19ae83df4 100644
--- a/be/src/vec/aggregate_functions/aggregate_function_map.h
+++ b/be/src/vec/aggregate_functions/aggregate_function_map.h
@@ -248,6 +248,7 @@ public:
             Field key, value;
             columns[0]->get(i, key);
             if (key.is_null()) {
+                col.insert(Map {Array {}, Array {}});
                 continue;
             }