diff --git a/network.py b/network.py
index 77dc92d..e845308 100644
--- a/network.py
+++ b/network.py
@@ -8,7 +8,7 @@ import json
 import re
 from math import e
 import struct
-from maix import time,network
+from maix import time,network,err
 import hmac
 import hashlib
 import ujson
@@ -584,6 +584,33 @@ class NetworkManager:
         except Exception as e:
             self.logger.error(f"[LASER] cmd200 检测异常: {e}")
 
+    def _cmd300_ota(self, data_obj):
+        """后台线程执行 cmd300 OTA，避免阻塞主循环"""
+        hardware_manager.start_idle_timer()
+        inner_data = data_obj.get("data", {}) if isinstance(data_obj, dict) else {}
+        self.logger.info(f"[New Ota] cmd300 , data: {inner_data}")
+        ssid = inner_data.get("ssid")
+        password = inner_data.get("password")
+        ota_res_url = inner_data.get("url")
+        try:
+            w = network.wifi.Wifi()
+            e = w.connect(ssid, password, wait=True, timeout=15)
+            err.check_raise(e, "connect wifi failed")
+            if self.logger:
+                self.logger.info(f"[ota] Connect success, got ip{w.get_ip()}")
+            subprocess.run(
+                ["sh", "/maixapp/apps/t11/ota_curl.sh", ota_res_url])
+        except Exception as e:
+            self.logger.error(f"[ota] cmd300 失败: {e}")
+            self.safe_enqueue(
+                {
+                    "cmd": 300,
+                    "result": "ota fail",
+                    "reason": str(e),
+                },
+                2,
+            )
+
     def safe_enqueue(self, data_dict, msg_type=2, high=False):
         """线程安全地将消息加入队列（公共方法）"""
         self._enqueue((msg_type, data_dict), high)
@@ -2098,29 +2125,9 @@ class NetworkManager:
                                         import _thread
                                         _thread.start_new_thread(self._cmd200_detect_laser, ())
                                     elif inner_cmd == 300:
-                                        inner_data = data_obj.get("data", {}) if isinstance(data_obj, dict) else {}
-                                        self.logger.info(f"[New Ota] cmd300 , data: {inner_data}")
-                                        ssid = inner_data.get("ssid")
-                                        password = inner_data.get("password")
-                                        ota_res_url = inner_data.get("url")
-                                        try:
-                                            w = network.wifi.Wifi()
-                                            w.connect(ssid, password, wait=True, timeout=15)
-                                            if self.logger:
-                                                self.logger.info(f"[ota] Connect success, got ip{w.get_ip()}")
-                                            subprocess.run(
-                                                ["sh", "/maixapp/apps/t11/ota_curl.sh", ota_res_url])
-                                        except Exception as e:
-                                            self.logger.error(f"[ota] cmd300 失败: {e}")
-                                            self.safe_enqueue(
-                                                {
-                                                    "cmd": 300,
-                                                    "result": "ota fail",
-                                                    "reason": str(e),
-                                                },
-                                                2,
-                                            )
-                                        hardware_manager.start_idle_timer()
+                                        self.logger.info("[New Ota] cmd300 在后台线程执行OTA")
+                                        import _thread
+                                        _thread.start_new_thread(self._cmd300_ota, (data_obj,))
                                 else: # data的结构不是 dict
                                     self.logger.info(f"[NET] body={body}, {time.time()}")
                             else: