diff --git a/app/api/core.py b/app/api/core.py
index db3d3c2..b0c6f30 100644
--- a/app/api/core.py
+++ b/app/api/core.py
@@ -79,3 +79,16 @@ async def connect_websocket(websocket: WebSocket):
 
     Config.websocket = None
     await System.set_power("KillSelf")
+
+
+@router.post("/close")
+async def close():
+    """关闭后端程序"""
+
+    try:
+        await System.set_power("KillSelf")
+    except Exception as e:
+        return OutBase(
+            code=500, status="error", message=f"{type(e).__name__}: {str(e)}"
+        )
+    return OutBase()
diff --git a/app/core/timer.py b/app/core/timer.py
index a5be594..c803a56 100644
--- a/app/core/timer.py
+++ b/app/core/timer.py
@@ -111,8 +111,6 @@ class _MainTimer:
     async def set_silence(self):
         """静默模式通过模拟老板键来隐藏模拟器窗口"""
 
-        logger.debug("检查静默模式")
-
         if (
             len(Config.if_ignore_silence) > 0
             and Config.get("Function", "IfSilence")
@@ -145,7 +143,5 @@ class _MainTimer:
                 except Exception as e:
                     logger.exception(f"模拟按键时出错: {e}")
 
-        logger.debug("静默模式检查完毕")
-
 
 MainTimer = _MainTimer()
diff --git a/main.py b/main.py
index 9a2c3da..c630b0e 100644
--- a/main.py
+++ b/main.py
@@ -77,6 +77,7 @@ def main():
 
             from app.core import Config, MainTimer, TaskManager
             from app.services import System
+            from app.models.schema import WebSocketMessage
 
             await Config.init_config()
             await Config.get_stage(if_start=True)
@@ -101,6 +102,12 @@ def main():
 
             await Matomo.close()
 
+            await Config.send_json(
+                WebSocketMessage(
+                    id="Main", type="Signal", data={"Close": "后端已安全关闭"}
+                ).model_dump()
+            )
+
             logger.info("AUTO-MAS 后端程序关闭")
 
         from fastapi.middleware.cors import CORSMiddleware