diff --git a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/controller/admin/base/vo/ElementSaveReqVO.java b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/controller/admin/base/vo/ElementSaveReqVO.java
index 8741e4c..eafee0c 100644
--- a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/controller/admin/base/vo/ElementSaveReqVO.java
+++ b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/controller/admin/base/vo/ElementSaveReqVO.java
@@ -20,7 +20,7 @@ public class ElementSaveReqVO {
     private String name;
 
     @Schema(description = "金属元素编码", requiredMode = Schema.RequiredMode.REQUIRED)
-    @NotEmpty(message = "金属元素编码不能为空")
+//    @NotEmpty(message = "金属元素编码不能为空")
     private String coding;
 
     @Schema(description = "品位单位", requiredMode = Schema.RequiredMode.REQUIRED)
diff --git a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/dal/dataobject/base/ElementDO.java b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/dal/dataobject/base/ElementDO.java
index 62dbcb4..66172eb 100644
--- a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/dal/dataobject/base/ElementDO.java
+++ b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/dal/dataobject/base/ElementDO.java
@@ -2,6 +2,7 @@ package com.zt.plat.module.base.dal.dataobject.base;
 
 import com.baomidou.mybatisplus.annotation.*;
 import com.zt.plat.framework.mybatis.core.dataobject.BaseDO;
+import com.zt.plat.framework.mybatis.core.dataobject.BusinessBaseDO;
 import lombok.*;
 /**
 * 金属元素 DO
@@ -19,7 +20,7 @@ import lombok.*;
 /**
 * 支持业务基类继承：isBusiness=true 时继承 BusinessBaseDO，否则继承 BaseDO
 */
-public class ElementDO extends BaseDO {
+public class ElementDO extends BusinessBaseDO {
 
 
 
diff --git a/zt-module-base/zt-module-base-server/src/main/resources/mapper/base/ElementMapper.xml b/zt-module-base/zt-module-base-server/src/main/resources/mapper/base/ElementMapper.xml
index d4b82a9..66316ee 100644
--- a/zt-module-base/zt-module-base-server/src/main/resources/mapper/base/ElementMapper.xml
+++ b/zt-module-base/zt-module-base-server/src/main/resources/mapper/base/ElementMapper.xml
@@ -10,6 +10,6 @@
      -->
 
     <select id="selectMaxCode" resultType="java.lang.String">
-        SELECT MAX(coding) FROM element
+        SELECT MAX(CDG) FROM sply_elem
     </select>
 </mapper>
\ No newline at end of file