diff --git a/src/agentscope/models/openai_model.py b/src/agentscope/models/openai_model.py
index 9c47e886c..0d8455a17 100644
--- a/src/agentscope/models/openai_model.py
+++ b/src/agentscope/models/openai_model.py
@@ -57,6 +57,7 @@ def __init__(
         """
         if model_name is None:
             model_name = config_name
+            logger.warning("model_name is not set, use config_name instead.")
         super().__init__(
             config_name=config_name,
             model_name=model_name,
diff --git a/src/agentscope/models/tongyi_model.py b/src/agentscope/models/tongyi_model.py
index 57eb92294..74712fc13 100644
--- a/src/agentscope/models/tongyi_model.py
+++ b/src/agentscope/models/tongyi_model.py
@@ -47,6 +47,7 @@ def __init__(
         """
         if model_name is None:
             model_name = config_name
+            logger.warning("model_name is not set, use config_name instead.")
         super().__init__(
             config_name=config_name,
             model_name=model_name,