diff --git a/out_service/cd.py b/out_service/cd.py
index 2618e130..532bfb29 100644
--- a/out_service/cd.py
+++ b/out_service/cd.py
@@ -79,6 +79,16 @@ class JSONRequestHandler(BaseHTTPRequestHandler):
                     sc.settimeout(5)  # 设置超时
                     sc.connect((host, int(port)))
                     sc_all[addr] = sc
+                # 清空接收缓冲区
+                sc.settimeout(0.1)  # 设置短暂超时
+                for _ in range(5):
+                    try:
+                        data = sc.recv(65536)
+                        if not data:
+                            break
+                    except (socket.timeout, BlockingIOError):
+                        break
+                sc.settimeout(5)  # 恢复原超时设置
                 sc.sendall(b"R")
                 return sc
             except Exception as e: