diff --git a/detection/GPTdetection.py b/detection/GPTdetection.py
index 4d8afee..983e847 100644
--- a/detection/GPTdetection.py
+++ b/detection/GPTdetection.py
@@ -2,12 +2,29 @@ import json
 import os
 from .utils import *
 import openai
+import signal
+
+
+class TimeoutException(Exception):
+    """Custom exception to handle timeouts."""
+
+    pass
+
+
+def timeout_handler(signum, frame):
+    """Handle the SIGALRM signal by raising a TimeoutException."""
+    raise TimeoutException
 
 
 def detectGPT(content: str):
     api_key = os.getenv("OPENAI_API_KEY")
     if api_key is None:
         raise ValueError("env OPENAI_API_KEY no set")
+
+    # Set alarm timer
+    signal.signal(signal.SIGTERM, timeout_handler)
+    signal.alarm(10)
+
     client = openai.OpenAI(api_key=api_key)
     text = content
     # client = openai.OpenAI(api_key="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") #测试用key
@@ -31,9 +48,16 @@ def detectGPT(content: str):
         if message_content is None:
             raise ValueError("API response content is None")
         res_json = json.loads(message_content)
+
     except json.JSONDecodeError:
         raise ValueError("Error: Could not parse the response. Please try again.")
 
+    except TimeoutException:
+        raise TimeoutException("The api call timed out")
+
+    finally:
+        signal.alarm(0)
+
     classified_results = {"high": [], "medium": [], "low": [], "none": []}
     for res in res_json:
         classified_results[res["Risk"]].append(
diff --git a/tests/test_backdoor_detection.py b/tests/test_backdoor_detection.py
index 6e2fe60..7bbb0d4 100644
--- a/tests/test_backdoor_detection.py
+++ b/tests/test_backdoor_detection.py
@@ -1,6 +1,8 @@
 import unittest
 import warnings
 
+from pydantic import NoneStr
+
 from detection.backdoor_detection import find_dangerous_functions
 from detection.GPTdetection import detectGPT
 import os
@@ -84,6 +86,8 @@ class TestBackdoorDetection(unittest.TestCase):
         self.assertEqual(len(results["low"]), 0)
 
     def test_gpt_env_no_set(self):
+        if os.getenv("OPENAI_API_KEY") is not None:
+            self.skipTest("OPENAI_API_KEY is setted")
         content = "print('test test')"
         with self.assertRaises(ValueError):
             detectGPT(content)