diff --git a/src/main/java/com/youlai/boot/system/mapper/DictMapper.java b/src/main/java/com/youlai/boot/system/mapper/DictMapper.java
index 180446ef..5b3e1624 100644
--- a/src/main/java/com/youlai/boot/system/mapper/DictMapper.java
+++ b/src/main/java/com/youlai/boot/system/mapper/DictMapper.java
@@ -36,14 +36,6 @@ public interface DictMapper extends BaseMapper<Dict> {
      */
     List<DictVO> getAllDictWithData();
 
-    /**
-     * 获取指定字典编码对应的的数量
-     *
-     * @param dictCode 字典编码
-     * @return
-     */
-    long getDictCodeCount(String dictCode);
-
 }
 
 
diff --git a/src/main/java/com/youlai/boot/system/service/impl/DictServiceImpl.java b/src/main/java/com/youlai/boot/system/service/impl/DictServiceImpl.java
index a7d11f00..e2090dd9 100644
--- a/src/main/java/com/youlai/boot/system/service/impl/DictServiceImpl.java
+++ b/src/main/java/com/youlai/boot/system/service/impl/DictServiceImpl.java
@@ -67,7 +67,9 @@ public class DictServiceImpl extends ServiceImpl<DictMapper, Dict> implements Di
         // 校验 code 是否唯一
         String dictCode = entity.getDictCode();
 
-        long count = this.baseMapper.getDictCodeCount(dictCode);
+        long count = this.count(new LambdaQueryWrapper<Dict>()
+            .eq(Dict::getDictCode, dictCode)
+        );
 
         Assert.isTrue(count == 0, "字典编码已存在");
 
diff --git a/src/main/resources/mapper/system/DictMapper.xml b/src/main/resources/mapper/system/DictMapper.xml
index 201a5561..4f717cb4 100644
--- a/src/main/resources/mapper/system/DictMapper.xml
+++ b/src/main/resources/mapper/system/DictMapper.xml
@@ -47,14 +47,4 @@
         ORDER BY
             t1.create_time DESC
     </select>
-
-    <!-- 获取指定字典编码对应的的数量 -->
-    <select id="getDictCodeCount" resultType="java.lang.Long">
-        SELECT
-            COUNT(*) AS total
-        FROM
-            sys_dict
-        WHERE
-            dict_code = #{dictCode}
-    </select>
 </mapper>