diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/IotMachineController.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/IotMachineController.java
index 992fa8f4..db358fd5 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/IotMachineController.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/material/controller/IotMachineController.java
@@ -11,6 +11,7 @@ import com.bonus.sgzb.material.service.IotMachineService;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
@@ -53,7 +54,7 @@ public class IotMachineController extends BaseController {
     @PostMapping("/addOrUpdate")
     public AjaxResult addOrUpdate(@Validated @RequestBody IotDto iotDto) {
         log.info("添加或者修改设备传参：{}", iotDto);
-        if (iotDto.getIotId() != null) {
+        if (!StringUtils.isEmpty(iotDto.getIotId())) {
             return iotMachineService.update(iotDto);
         }
         return iotMachineService.add(iotDto);