diff --git a/python/sglang/srt/environ.py b/python/sglang/srt/environ.py
index de0d52742..01298a753 100644
--- a/python/sglang/srt/environ.py
+++ b/python/sglang/srt/environ.py
@@ -126,6 +126,7 @@ class Envs:
     SGLANG_DISABLE_REQUEST_LOGGING = EnvBool(False)
     SGLANG_SIMULATE_ACC_LEN = EnvFloat(-1)
     SGLANG_SIMULATE_ACC_METHOD = EnvStr("multinomial")
+    SGLANG_TORCH_PROFILER_DIR = EnvStr("/tmp")
 
     # Model Parallel
     SGLANG_USE_MESSAGE_QUEUE_BROADCASTER = EnvBool(True)
diff --git a/test/srt/test_start_profile.py b/test/srt/test_start_profile.py
index 60f5f7960..41342ef3f 100644
--- a/test/srt/test_start_profile.py
+++ b/test/srt/test_start_profile.py
@@ -9,6 +9,7 @@ import unittest
 
 import requests
 
+from sglang.srt.environ import envs
 from sglang.srt.utils import kill_process_tree
 from sglang.test.test_utils import (
     DEFAULT_SMALL_MODEL_NAME_FOR_TEST,
@@ -25,6 +26,7 @@ class TestStartProfile(CustomTestCase):
 
     @classmethod
     def setUpClass(cls):
+        envs.SGLANG_TORCH_PROFILER_DIR.set(OUTPUT_DIR)
         cls.model = DEFAULT_SMALL_MODEL_NAME_FOR_TEST
         cls.base_url = DEFAULT_URL_FOR_TEST
         cls.process = popen_launch_server(
@@ -111,5 +113,4 @@ class TestStartProfile(CustomTestCase):
 
 
 if __name__ == "__main__":
-    os.environ["SGLANG_TORCH_PROFILER_DIR"] = OUTPUT_DIR
     unittest.main()