diff --git a/src/backend/app/services/network_scanner.py b/src/backend/app/services/network_scanner.py
index 76b60d8..804ca9a 100644
--- a/src/backend/app/services/network_scanner.py
+++ b/src/backend/app/services/network_scanner.py
@@ -21,7 +21,9 @@ class NetworkScanner:
         # 扫描开放22(SSH)或23(Telnet)端口的设备
         self.nm.scan(
             hosts=subnet,
-            arguments="-p 22,23 --open -T4"
+            arguments="-p 22,23 -Pn -T4 --packet-trace --disable-arp-ping",
+            timeout=5
+
         )
 
         devices = []