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 3188d823..180446ef 100644
--- a/src/main/java/com/youlai/boot/system/mapper/DictMapper.java
+++ b/src/main/java/com/youlai/boot/system/mapper/DictMapper.java
@@ -35,6 +35,15 @@ public interface DictMapper extends BaseMapper<Dict> {
      * @return
      */
     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 996b2ab4..a7d11f00 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
@@ -67,9 +67,8 @@ public class DictServiceImpl extends ServiceImpl<DictMapper, Dict> implements Di
         // 校验 code 是否唯一
         String dictCode = entity.getDictCode();
 
-        long count = this.count(new LambdaQueryWrapper<Dict>()
-                .eq(Dict::getDictCode, dictCode)
-        );
+        long count = this.baseMapper.getDictCodeCount(dictCode);
+
         Assert.isTrue(count == 0, "字典编码已存在");
 
         return this.save(entity);
diff --git a/src/main/resources/mapper/system/DictMapper.xml b/src/main/resources/mapper/system/DictMapper.xml
index 4f717cb4..201a5561 100644
--- a/src/main/resources/mapper/system/DictMapper.xml
+++ b/src/main/resources/mapper/system/DictMapper.xml
@@ -47,4 +47,14 @@
         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>