diff --git a/tests/python_client/testcases/entity/test_insert.py b/tests/python_client/testcases/entity/test_insert.py
index 5fc906a1f9..5366820ea0 100644
--- a/tests/python_client/testcases/entity/test_insert.py
+++ b/tests/python_client/testcases/entity/test_insert.py
@@ -1141,6 +1141,11 @@ class TestInsertInvalidBinary(object):
 
     @pytest.mark.tags(CaseLabel.L2)
     def test_insert_with_invalid_field_name(self, connect, binary_collection, get_field_name):
+        """
+        target: test insert with invalid field name
+        method: insert with invalid field name
+        expected: raise exception
+        """
         tmp_entity = update_field_name(copy.deepcopy(default_binary_entity), "int64", get_field_name)
         with pytest.raises(Exception):
             connect.insert(binary_collection, tmp_entity)