diff --git a/health-watch/health-watch-biz/src/main/java/com/renkang/watch/controller/WatchDeviceController.java b/health-watch/health-watch-biz/src/main/java/com/renkang/watch/controller/WatchDeviceController.java
index c0be757..3ff9d19 100644
--- a/health-watch/health-watch-biz/src/main/java/com/renkang/watch/controller/WatchDeviceController.java
+++ b/health-watch/health-watch-biz/src/main/java/com/renkang/watch/controller/WatchDeviceController.java
@@ -295,6 +295,12 @@ public class WatchDeviceController extends JeecgController<WatchDevice, IWatchDe
     @RequiresPermissions("watch:watch_device:add")
     @PostMapping(value = "/add")
     public Result<String> add(@RequestBody WatchDevice watchDevice) {
+        // 校验设备编码是否已存在
+        LambdaQueryWrapper<WatchDevice> queryWrapper = new LambdaQueryWrapper<>();
+        queryWrapper.eq(WatchDevice::getWatchNo, watchDevice.getWatchNo());
+        if (watchDeviceService.count(queryWrapper) > 0) {
+            return Result.error("设备编码已存在，请勿重复添加");
+        }
         // 删除开关
         LambdaUpdateWrapper<WatchDeviceSwitch> updateWrapper = new LambdaUpdateWrapper<>();
         updateWrapper.eq(WatchDeviceSwitch::getWatchNo, watchDevice.getWatchNo());