diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysConfigMapper.java b/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysConfigMapper.java
index 0c395f6..999995d 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysConfigMapper.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysConfigMapper.java
@@ -18,6 +18,14 @@ public interface SysConfigMapper
      */
     public SysConfig selectConfig(SysConfig config);
 
+    /**
+     * 通过ID查询配置
+     * 
+     * @param configId 参数ID
+     * @return 参数配置信息
+     */
+    public SysConfig selectConfigById(Long configId);
+
     /**
      * 查询参数配置列表
      * 
diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysConfigServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysConfigServiceImpl.java
index bc390ad..091aba7 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysConfigServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysConfigServiceImpl.java
@@ -134,6 +134,12 @@ public class SysConfigServiceImpl implements ISysConfigService
     @Override
     public int updateConfig(SysConfig config)
     {
+        SysConfig temp = configMapper.selectConfigById(config.getConfigId());
+        if (!StringUtils.equals(temp.getConfigKey(), config.getConfigKey()))
+        {
+            redisCache.deleteObject(getCacheKey(temp.getConfigKey()));
+        }
+
         int row = configMapper.updateConfig(config);
         if (row > 0)
         {
diff --git a/ruoyi-system/src/main/resources/mapper/system/SysConfigMapper.xml b/ruoyi-system/src/main/resources/mapper/system/SysConfigMapper.xml
index b1570e2..c211692 100644
--- a/ruoyi-system/src/main/resources/mapper/system/SysConfigMapper.xml
+++ b/ruoyi-system/src/main/resources/mapper/system/SysConfigMapper.xml
@@ -59,6 +59,11 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 		</where>
     </select>
     
+    <select id="selectConfigById" parameterType="Long" resultMap="SysConfigResult">
+        <include refid="selectConfigVo"/>
+        where config_id = #{configId}
+    </select>
+	
     <select id="checkConfigKeyUnique" parameterType="String" resultMap="SysConfigResult">
         <include refid="selectConfigVo"/>
         where config_key = #{configKey} limit 1