diff --git a/internal/logic/public/user/getDeviceListLogic.go b/internal/logic/public/user/getDeviceListLogic.go
index b1ea792..8f4f43d 100644
--- a/internal/logic/public/user/getDeviceListLogic.go
+++ b/internal/logic/public/user/getDeviceListLogic.go
@@ -34,12 +34,25 @@ func (l *GetDeviceListLogic) GetDeviceList() (resp *types.GetDeviceListResponse,
 		return nil, err
 	}
 	list, count, err := l.svcCtx.UserModel.QueryDeviceListByUserIds(l.ctx, scopeUserIds)
-	userRespList := make([]types.UserDevice, 0)
-	tool.DeepCopy(&userRespList, list)
-	for i, d := range list {
-		if i < len(userRespList) {
-			userRespList[i].DeviceNo = tool.DeviceIdToHash(d.Id)
-		}
+	if err != nil {
+		return nil, err
+	}
+	// FIX: 逐条复制并设置 DeviceNo，避免 DeepCopy 批量复制后 len(userRespList) 与 list 不一致
+	// 导致 if i < len(userRespList) 条件失效、只有第一条设备号被正确赋值的 bug。
+	// 原始代码（保留以供对照）：
+	// userRespList := make([]types.UserDevice, 0)
+	// tool.DeepCopy(&userRespList, list)
+	// for i, d := range list {
+	// 	if i < len(userRespList) {
+	// 		userRespList[i].DeviceNo = tool.DeviceIdToHash(d.Id)
+	// 	}
+	// }
+	userRespList := make([]types.UserDevice, 0, len(list))
+	for _, d := range list {
+		var item types.UserDevice
+		tool.DeepCopy(&item, d)
+		item.DeviceNo = tool.DeviceIdToHash(d.Id)
+		userRespList = append(userRespList, item)
 	}
 	resp = &types.GetDeviceListResponse{
 		Total: count,