diff --git a/tests/metagpt/test_schema.py b/tests/metagpt/test_schema.py
index 12666e0d3..71bb39c77 100644
--- a/tests/metagpt/test_schema.py
+++ b/tests/metagpt/test_schema.py
@@ -4,18 +4,44 @@
 @Time    : 2023/5/20 10:40
 @Author  : alexanderwu
 @File    : test_schema.py
+@Modified By: mashenquan, 2023-11-1. Add `test_message`.
 """
+import json
+
+import pytest
+
 from metagpt.schema import AIMessage, Message, SystemMessage, UserMessage
 
 
+@pytest.mark.asyncio
 def test_messages():
-    test_content = 'test_message'
+    test_content = "test_message"
     msgs = [
         UserMessage(test_content),
         SystemMessage(test_content),
         AIMessage(test_content),
-        Message(test_content, role='QA')
+        Message(test_content, role="QA"),
     ]
     text = str(msgs)
-    roles = ['user', 'system', 'assistant', 'QA']
+    roles = ["user", "system", "assistant", "QA"]
     assert all([i in text for i in roles])
+
+
+@pytest.mark.asyncio
+def test_message():
+    m = Message("a", role="v1")
+    v = m.save()
+    d = json.loads(v)
+    assert d
+    assert d.get("content") == "a"
+    assert d.get("meta_info") == {"role": "v1"}
+    m.set_role("v2")
+    v = m.save()
+    assert v
+    m = Message.load(v)
+    assert m.content == "a"
+    assert m.role == "v2"
+
+
+if __name__ == "__main__":
+    pytest.main([__file__, "-s"])
diff --git a/tests/metagpt/utils/test_named.py b/tests/metagpt/utils/test_named.py
index 89a68b5e7..ff1f07205 100644
--- a/tests/metagpt/utils/test_named.py
+++ b/tests/metagpt/utils/test_named.py
@@ -1,3 +1,10 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+@Time    : 2023-11-1
+@Author  : mashenquan
+@File    : test_named.py
+"""
 import pytest
 
 from metagpt.utils.named import Named