diff --git a/miniprogram/src/app.js b/miniprogram/src/app.js
index 1d0c91a..1194eda 100644
--- a/miniprogram/src/app.js
+++ b/miniprogram/src/app.js
@@ -1,8 +1,44 @@
 import { Component } from 'react';
 import { View } from '@tarojs/components';
+import Taro from '@tarojs/taro';
 import './app.scss';
 
 class App extends Component {
+  componentDidMount() {
+    // 启动时缓存邀请人参数（小程序码 scene 或分享 query），登录时自动关联
+    try {
+      const opts = Taro.getLaunchOptionsSync?.() || {};
+      const scene = opts.scene || '';
+      const query = opts.query || {};
+      let inviter = '';
+      if (scene && typeof scene === 'string' && scene.includes('i=')) {
+        const match = scene.match(/i=([^&]+)/);
+        if (match) inviter = match[1];
+      }
+      if (!inviter && query.inviter) inviter = query.inviter;
+      if (!inviter && query.i) inviter = query.i;
+      if (inviter) {
+        Taro.setStorageSync('pending_inviter', inviter);
+      }
+    } catch (e) {
+      // ignore
+    }
+  }
+
+  componentDidShow() {
+    // 每次显示时也检查邀请参数（通过分享卡片进入时）
+    try {
+      const opts = Taro.getLaunchOptionsSync?.() || {};
+      const query = opts.query || {};
+      const inviter = query.inviter || query.i || '';
+      if (inviter && !Taro.getStorageSync('pending_inviter')) {
+        Taro.setStorageSync('pending_inviter', inviter);
+      }
+    } catch (e) {
+      // ignore
+    }
+  }
+
   render() {
     return (
       <View className="app">
diff --git a/miniprogram/src/pages-extra/test/index.jsx b/miniprogram/src/pages-extra/test/index.jsx
index 52cbc2e..d04208a 100644
--- a/miniprogram/src/pages-extra/test/index.jsx
+++ b/miniprogram/src/pages-extra/test/index.jsx
@@ -4,9 +4,9 @@ import { useState, useRef } from 'react';
 import { useTabIndex } from '@/utils/tab';
 import { request } from '@/utils/api';
 import { getUser } from '@/utils/auth';
+import { getInviteQrcode, recordShare } from '@/utils/invite';
 import './index.scss';
 import { PageHeader } from '@/components/TopInset';
-import qrcodeImg from '@/assets/qrcode-test.png';
 
 const adaptColor = (s) => (s >= 78 ? '#a8f0c8' : s >= 55 ? '#f5d9a0' : '#f0b8b8');
 
@@ -27,20 +27,30 @@ export default function Test() {
 
   /* 分享配置：微信好友 */
   useShareAppMessage(() => {
-    if (stage !== 'result' || !result) return { title: 'OPC 创业基因测评', path: '/pages-extra/test/index' };
+    const user = getUser() || {};
+    const inviter = user.invite_code || user.id || '';
+    if (stage !== 'result' || !result) {
+      return { title: 'OPC 创业基因测评', path: `/pages-extra/test/index?inviter=${inviter}` };
+    }
     const persona = result.persona || {};
+    // 记录分享
+    recordShare({ channel: 'share_app', scene: 'test_result' }).catch(() => {});
     return {
       title: `我的 OPC 画像是 ${result.typeCode} · ${persona.name || ''}，契合度 ${result.adaptIndex}`,
-      path: '/pages-extra/test/index',
+      path: `/pages-extra/test/index?inviter=${inviter}`,
     };
   });
 
   /* 分享配置：朋友圈 */
   useShareTimeline(() => {
-    if (stage !== 'result' || !result) return { title: 'OPC 创业基因测评' };
+    const user = getUser() || {};
+    const inviter = user.invite_code || user.id || '';
+    if (stage !== 'result' || !result) return { title: 'OPC 创业基因测评', query: `inviter=${inviter}` };
     const persona = result.persona || {};
+    recordShare({ channel: 'share_timeline', scene: 'test_result' }).catch(() => {});
     return {
       title: `我的 OPC 画像是 ${result.typeCode} · ${persona.name || ''}，契合度 ${result.adaptIndex}`,
+      query: `inviter=${inviter}`,
     };
   });
 
@@ -174,7 +184,7 @@ export default function Test() {
     ctx.setFillStyle('#a3abc9');
     ctx.fillText('云超服 OPC · 为进化而设计', 200, qrY + 105);
 
-    // 绘制二维码图片
+    // 绘制二维码图片（从后端获取带邀请参数的小程序码）
     return new Promise((resolve) => {
       const img = Taro.createImage();
       img.onload = () => {
@@ -192,7 +202,18 @@ export default function Test() {
         ctx.draw();
         setTimeout(resolve, 300);
       };
-      img.src = qrcodeImg;
+      // 先尝试从后端获取动态小程序码，失败则用占位
+      getInviteQrcode({ scene: 'test_result', page: 'pages-extra/test/index', env: 'trial' })
+        .then((res) => {
+          if (res && res.image) {
+            img.src = res.image; // base64 data URL
+          } else {
+            img.src = ''; // 触发 onerror 画占位
+          }
+        })
+        .catch(() => {
+          img.src = ''; // 触发 onerror 画占位
+        });
     });
   };
 
diff --git a/miniprogram/src/utils/auth.js b/miniprogram/src/utils/auth.js
index e5d5250..7e5aa3c 100644
--- a/miniprogram/src/utils/auth.js
+++ b/miniprogram/src/utils/auth.js
@@ -54,12 +54,39 @@ export function logout() {
 }
 
 /* ---------------- 微信登录 / 我的资料（平台 /auth） ---------------- */
+/** 从启动参数中提取邀请人（小程序码 scene 格式：i=邀请码&s=场景） */
+function _extractInviterFromLaunch() {
+  try {
+    const opts = Taro.getLaunchOptionsSync?.() || {};
+    const scene = opts.scene || '';
+    const query = opts.query || {};
+    // 小程序码 scene 参数
+    if (scene && typeof scene === 'string' && scene.includes('i=')) {
+      const match = scene.match(/i=([^&]+)/);
+      if (match) return match[1];
+    }
+    // query 中的 inviter 参数
+    if (query.inviter) return query.inviter;
+    if (query.i) return query.i;
+    // 缓存的邀请人（扫码后未登录时缓存）
+    const cached = Taro.getStorageSync('pending_inviter');
+    if (cached) return cached;
+    return '';
+  } catch (e) {
+    return '';
+  }
+}
+
 /** 微信一键登录：wx.login 拿 code → 平台 /auth/wx-login（需后端配 PINEAGENTS_WECHAT_LOGIN=true） */
-export async function wxLogin({ code, nickName, avatarUrl }) {
-  const data = await request('POST', '/auth/wx-login', { code, nickName, avatarUrl });
+export async function wxLogin({ code, nickName, avatarUrl, inviter = '', scene = '' }) {
+  // 自动从启动参数提取邀请人（调用方未显式传入时）
+  const finalInviter = inviter || _extractInviterFromLaunch();
+  const data = await request('POST', '/auth/wx-login', { code, nickName, avatarUrl, inviter: finalInviter, scene });
   if (data.token) {
     Taro.setStorageSync('pine_token', data.token);
     saveUser(data);
+    // 登录成功后清除缓存的邀请人
+    Taro.removeStorageSync('pending_inviter');
     return data;
   }
   return data;
diff --git a/miniprogram/src/utils/invite.js b/miniprogram/src/utils/invite.js
new file mode 100644
index 0000000..a82c556
--- /dev/null
+++ b/miniprogram/src/utils/invite.js
@@ -0,0 +1,26 @@
+import { request } from './api';
+
+/** 获取我的邀请码和统计 */
+export async function getMyInvite() {
+  return request('GET', '/invite/me', {}, true);
+}
+
+/** 生成带邀请参数的小程序码 */
+export async function getInviteQrcode({ scene = 'home', page = 'pages/index/index', env = 'trial', width = 430 } = {}) {
+  return request('GET', `/invite/qrcode?scene=${scene}&page=${encodeURIComponent(page)}&env=${env}&width=${width}`, {}, true);
+}
+
+/** 记录分享行为 */
+export async function recordShare({ channel = 'share_app', scene = '', env = 'trial' } = {}) {
+  return request('POST', '/invite/share', { channel, scene, env }, true);
+}
+
+/** 记录扫码行为（无需登录） */
+export async function recordScan({ inviter, scene = '', env = 'trial' } = {}) {
+  return request('POST', '/invite/scan', { inviter, scene, env });
+}
+
+/** 获取我邀请的用户列表 */
+export async function getInvitees() {
+  return request('GET', '/invite/invitees', {}, true);
+}