diff --git a/src/main/java/com/sqx/modules/ext/controller/ExtSysController.java b/src/main/java/com/sqx/modules/ext/controller/ExtSysController.java
new file mode 100644
index 00000000..1deaf3bd
--- /dev/null
+++ b/src/main/java/com/sqx/modules/ext/controller/ExtSysController.java
@@ -0,0 +1,45 @@
+package com.sqx.modules.ext.controller;
+
+import cn.hutool.core.exceptions.ValidateException;
+import com.sqx.common.utils.Result;
+import com.sqx.modules.coupon.entity.Coupon;
+import com.sqx.modules.ext.param.InviteFriendConfigParam;
+import com.sqx.modules.ext.service.ExtSysService;
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import javax.ws.rs.GET;
+
+/**
+ * 扩展功能控制层
+ * @author tankaikai
+ * @since 2025-03-28 09:32
+ */
+@RestController
+@Api(value = "扩展功能", tags = {"扩展功能"})
+@RequestMapping(value = {"/ext/sys","/app/ext/sys"})
+public class ExtSysController {
+
+    @Autowired
+    private ExtSysService extSysService;
+
+    @PostMapping("/invite/friend/config/save")
+    @ApiOperation("保存邀请好友配置信息")
+    public Result saveInviteFriendConfig(@RequestBody InviteFriendConfigParam param){
+        try {
+            extSysService.saveInviteFriendConfig(param);
+        }catch (ValidateException e){
+            return Result.error(e.getMessage());
+        }
+        return Result.success();
+    }
+
+    @GetMapping("/invite/friend/config/get")
+    @ApiOperation("获取邀请好友配置信息")
+    public Result getInviteFriendConfig(){
+        InviteFriendConfigParam data = extSysService.getInviteFriendConfig();
+        return Result.success().put("data", data);
+    }
+}
diff --git a/src/main/java/com/sqx/modules/ext/param/InviteFriendConfigParam.java b/src/main/java/com/sqx/modules/ext/param/InviteFriendConfigParam.java
new file mode 100644
index 00000000..ce54d68f
--- /dev/null
+++ b/src/main/java/com/sqx/modules/ext/param/InviteFriendConfigParam.java
@@ -0,0 +1,22 @@
+package com.sqx.modules.ext.param;
+
+import lombok.Data;
+
+/**
+ * 邀请好友配置入参
+ * @author tankaikai
+ * @since 2025-03-28 09:32
+ */
+@Data
+public class InviteFriendConfigParam {
+
+    /**
+     * 邀请好友海报图片地址
+     */
+    private String imageUrl;
+
+    /**
+     * 邀请文案
+     */
+    private String tips;
+}
diff --git a/src/main/java/com/sqx/modules/ext/service/ExtSysService.java b/src/main/java/com/sqx/modules/ext/service/ExtSysService.java
new file mode 100644
index 00000000..060f9566
--- /dev/null
+++ b/src/main/java/com/sqx/modules/ext/service/ExtSysService.java
@@ -0,0 +1,15 @@
+package com.sqx.modules.ext.service;
+
+import com.sqx.modules.ext.param.InviteFriendConfigParam;
+
+/**
+ * 扩展系统服务接口
+ * @author tankaikai
+ * @since 2025-03-28 09:32
+ */
+public interface ExtSysService {
+
+    void saveInviteFriendConfig(InviteFriendConfigParam param);
+
+    InviteFriendConfigParam getInviteFriendConfig();
+}
diff --git a/src/main/java/com/sqx/modules/ext/service/impl/ExtSysServiceImpl.java b/src/main/java/com/sqx/modules/ext/service/impl/ExtSysServiceImpl.java
new file mode 100644
index 00000000..d3efcb72
--- /dev/null
+++ b/src/main/java/com/sqx/modules/ext/service/impl/ExtSysServiceImpl.java
@@ -0,0 +1,66 @@
+package com.sqx.modules.ext.service.impl;
+
+import cn.hutool.core.convert.Convert;
+import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.exceptions.ValidateException;
+import cn.hutool.core.util.StrUtil;
+import com.sqx.modules.common.dao.CommonInfoDao;
+import com.sqx.modules.common.entity.CommonInfo;
+import com.sqx.modules.common.service.CommonInfoService;
+import com.sqx.modules.ext.param.InviteFriendConfigParam;
+import com.sqx.modules.ext.service.ExtSysService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+/**
+ * 扩展功能服务实现类
+ *
+ * @author tankaikai
+ * @since 2025-03-28 09:32
+ */
+@Service
+public class ExtSysServiceImpl implements ExtSysService {
+    @Autowired
+    private CommonInfoDao commonInfoDao;
+
+    @Override
+    public void saveInviteFriendConfig(InviteFriendConfigParam param) {
+        if (StrUtil.isBlank(param.getImageUrl())) {
+            throw new ValidateException("顶部图片地址不能为空");
+        }
+        if (StrUtil.isBlank(param.getTips())) {
+            throw new ValidateException("邀请文案不能为空");
+        }
+        if (param.getTips().length() > 20) {
+            throw new ValidateException("邀请文案不能大于20个字符");
+        }
+        CommonInfo commonInfo = commonInfoDao.selectById(999L);
+        if (commonInfo == null) {
+            commonInfo = new CommonInfo();
+            commonInfo.setId(999L);
+            commonInfo.setCreateAt(DateUtil.now());
+            commonInfo.setMax(param.getTips());
+            commonInfo.setMin("邀请好友配置");
+            commonInfo.setValue(param.getImageUrl());
+            commonInfo.setType(Convert.toInt(commonInfo.getId()));
+            commonInfo.setIsAppUse(1);
+            commonInfoDao.insert(commonInfo);
+            return;
+        }
+        commonInfo.setMax(param.getTips());
+        commonInfo.setValue(param.getImageUrl());
+        commonInfoDao.updateById(commonInfo);
+    }
+
+    @Override
+    public InviteFriendConfigParam getInviteFriendConfig() {
+        CommonInfo commonInfo = commonInfoDao.selectById(999L);
+        if (commonInfo == null) {
+            return null;
+        }
+        InviteFriendConfigParam data = new InviteFriendConfigParam();
+        data.setTips(commonInfo.getMax());
+        data.setImageUrl(commonInfo.getValue());
+        return data;
+    }
+}