diff --git a/business-css/src/main/java/com/yfd/business/css/controller/DeviceController.java b/business-css/src/main/java/com/yfd/business/css/controller/DeviceController.java
index 64f0ecb..1601649 100644
--- a/business-css/src/main/java/com/yfd/business/css/controller/DeviceController.java
+++ b/business-css/src/main/java/com/yfd/business/css/controller/DeviceController.java
@@ -34,7 +34,13 @@ public class DeviceController {
     @PostMapping
     public boolean create(@RequestBody Device device) {
         device.setModifier(currentUsername());
-        return deviceService.save(device);
+        return deviceService.createDevice(device);
+    }
+
+    @PostMapping("/saveOrUpdate")
+    public boolean saveOrUpdate(@RequestBody Device device) {
+        device.setModifier(currentUsername());
+        return deviceService.saveOrUpdateByBusiness(device);
     }
 
     /**
diff --git a/business-css/src/main/java/com/yfd/business/css/service/DeviceService.java b/business-css/src/main/java/com/yfd/business/css/service/DeviceService.java
index 9e44e17..5b755e5 100644
--- a/business-css/src/main/java/com/yfd/business/css/service/DeviceService.java
+++ b/business-css/src/main/java/com/yfd/business/css/service/DeviceService.java
@@ -9,5 +9,7 @@ public interface DeviceService extends IService<Device> {
      */
     boolean importDevices(MultipartFile file, String deviceType);
 
-    public boolean createDevice(Device device) ;
+    boolean createDevice(Device device) ;
+
+    boolean saveOrUpdateByBusiness(Device device);
 }
diff --git a/business-css/src/main/java/com/yfd/business/css/service/impl/DeviceServiceImpl.java b/business-css/src/main/java/com/yfd/business/css/service/impl/DeviceServiceImpl.java
index c706ff6..921fe5e 100644
--- a/business-css/src/main/java/com/yfd/business/css/service/impl/DeviceServiceImpl.java
+++ b/business-css/src/main/java/com/yfd/business/css/service/impl/DeviceServiceImpl.java
@@ -67,6 +67,28 @@ public class DeviceServiceImpl
         // 2. 如果前端传了 deviceId，直接使用
         return this.save(device);
     }
+    
+    @Override
+    public boolean saveOrUpdateByBusiness(Device device) {
+
+        String deviceId = device.getDeviceId();
+
+        // 情况 1：未传 deviceId → 直接新增
+        if (StrUtil.isBlank(deviceId)) {
+            return this.save(device);
+        }
+
+        // 情况 2：传了 deviceId，判断是否存在
+        Device dbDevice = this.getById(deviceId);
+
+        if (dbDevice == null) {
+            // 数据库不存在 → 新增（使用传入的 deviceId）
+            return this.save(device);
+        } else {
+            // 数据库存在 → 更新
+            return this.updateById(device);
+        }
+    }
 
     private boolean importExcel(Workbook workbook, String deviceType) {
         try (Workbook wb = workbook) {