diff --git a/model/provider/openai_official.py b/model/provider/openai_official.py
index 7ecbeab7d..c428af81f 100644
--- a/model/provider/openai_official.py
+++ b/model/provider/openai_official.py
@@ -296,7 +296,7 @@ class ProviderOpenAIOfficial(Provider):
                         extra_conf: Dict = None,
                         **kwargs
                     ) -> str:
-        if os.environ.get("TEST_LLM", "off") == "on":
+        if os.environ.get("TEST_LLM", "off") != "on":
             return "这是一个测试消息。"
         
         super().accu_model_stat()