diff --git a/app/utils/test_to_thread.py b/app/utils/test_to_thread.py
new file mode 100644
index 0000000..aeb2b54
--- /dev/null
+++ b/app/utils/test_to_thread.py
@@ -0,0 +1,36 @@
+import asyncio
+import time
+
+
+async def main():
+  common_counter = 0
+
+  def sync_delay(name: str):
+    nonlocal common_counter
+    # current_counter = common_counter
+    time.sleep(0.5)
+    print(f"{name},111\n")
+    print(f"{name},222\n")
+    common_counter = common_counter + 1
+    print(f"{name},333\n")
+    print(f"{name}[common_counter]:{common_counter}\n")
+    print(f"{name},444\n")
+
+  start_time = time.time()
+
+  # sync_delay("1")
+  # sync_delay("2")
+  # sync_delay("3")
+
+  await asyncio.gather(
+    asyncio.create_task(asyncio.to_thread(sync_delay, name="A")),
+    asyncio.create_task(asyncio.to_thread(sync_delay, name="B")),
+    asyncio.create_task(asyncio.to_thread(sync_delay, name="C")),
+  )
+
+  print("common_counter", common_counter)
+
+  print(f"耗时: {time.time() - start_time}s")
+
+
+asyncio.run(main())