diff --git a/das/src/main/java/com/das/modules/equipment/service/impl/SysIotModelServiceImpl.java b/das/src/main/java/com/das/modules/equipment/service/impl/SysIotModelServiceImpl.java
index 6a2eb318..b6c30c70 100644
--- a/das/src/main/java/com/das/modules/equipment/service/impl/SysIotModelServiceImpl.java
+++ b/das/src/main/java/com/das/modules/equipment/service/impl/SysIotModelServiceImpl.java
@@ -203,12 +203,11 @@ public class SysIotModelServiceImpl implements SysIotModelService {
                 throw new ServiceException("物模型属性code已经存在");
             }
         }
-        sysIotModelFieldMapper.updateById(sysIotModelField);
-
         SysIotModelField oldSysIotField = sysIotModelFieldMapper.selectById(sysIotModelFieldDto.getId());
         if (oldSysIotField == null) {
             throw new ServiceException("未查找到该条记录");
         }
+        sysIotModelFieldMapper.updateById(sysIotModelField);
         if (!oldSysIotField.getAttributeCode().equals(sysIotModelField.getAttributeCode()) || !oldSysIotField.getDataType().equals(sysIotModelField.getDataType()) || Objects.equals(oldSysIotField.getHighSpeed(), sysIotModelField.getHighSpeed())) {
             //更新td表结构
             updateTDStableOrColumn(sysIotModelField, oldSysIotField);