diff --git a/miniprogram/app.json b/miniprogram/app.json
index e5a9976..f987ab6 100644
--- a/miniprogram/app.json
+++ b/miniprogram/app.json
@@ -13,6 +13,7 @@
     "pages/my-plans/my-plans",
     "pages/plan-edit/plan-edit",
     "pages/plan-detail/plan-detail",
+    "pages/plan-select/plan-select",
     "pages/plan-favorites/plan-favorites"
   ],
   "window": {
diff --git a/miniprogram/pages/collection/collection.js b/miniprogram/pages/collection/collection.js
index 7d02cf0..0dd152f 100644
--- a/miniprogram/pages/collection/collection.js
+++ b/miniprogram/pages/collection/collection.js
@@ -1,10 +1,15 @@
 const app = getApp();
 const planSvc = require('../../services/plan');
 
+// 官方训练计划浏览：默认展示全部分级，支持按等级筛选 + 名称搜索（均用现有字段）。
 Page({
   data: {
     statusBarHeight: 20,
     groups: [],
+    viewGroups: [],
+    levels: [{ value: 'all', label: '全部' }],
+    filterLevel: 'all',
+    keyword: '',
     loading: true
   },
 
@@ -15,20 +20,44 @@ Page({
 
   onShow() {
     // 从详情返回（可能收藏/导入变化）时刷新
-    if (!this.data.loading) this.load();
+    if (!this.data.loading && !this.data.keyword && this.data.filterLevel === 'all') this.load();
   },
 
   load() {
     this.setData({ loading: true });
     planSvc.officialGroups().then((res) => {
-      this.setData({ groups: (res && res.groups) || [], loading: false });
+      const groups = (res && res.groups) || [];
+      const levels = [{ value: 'all', label: '全部' }].concat(
+        groups.map((g) => ({ value: g.level, label: g.label }))
+      );
+      this.setData({ groups, levels, loading: false });
+      this.applyFilter();
     }).catch(() => {
-      this.setData({ groups: [], loading: false });
+      this.setData({ groups: [], viewGroups: [], levels: [{ value: 'all', label: '全部' }], loading: false });
     });
   },
 
-  // 计算某计划的跳转地址（供 wxml 使用）
-  planTarget(slug) {
-    return '/pages/collection-detail/collection-detail?slug=' + encodeURIComponent(slug);
+  applyFilter() {
+    const f = this.data.filterLevel;
+    const k = (this.data.keyword || '').trim().toLowerCase();
+    let groups = (this.data.groups || []).slice();
+    if (f !== 'all') groups = groups.filter((g) => g.level === f);
+    if (k) {
+      groups = groups
+        .map((g) => ({
+          ...g,
+          plans: (g.plans || []).filter((p) => (p.name || '').toLowerCase().includes(k))
+        }))
+        .filter((g) => (g.plans || []).length);
+    }
+    this.setData({ viewGroups: groups });
+  },
+
+  onFilter(e) {
+    this.setData({ filterLevel: e.detail.value }, () => this.applyFilter());
+  },
+
+  onSearch(e) {
+    this.setData({ keyword: e.detail.value }, () => this.applyFilter());
   }
 });
diff --git a/miniprogram/pages/collection/collection.json b/miniprogram/pages/collection/collection.json
index 66d158e..b4d9ba9 100644
--- a/miniprogram/pages/collection/collection.json
+++ b/miniprogram/pages/collection/collection.json
@@ -3,6 +3,8 @@
   "usingComponents": {
     "navbar": "/components/navbar/index",
     "section-header": "/components/section-header/index",
-    "plan-card": "/components/plan-card/index"
+    "plan-card": "/components/plan-card/index",
+    "chip": "/components/chip/index",
+    "fc-icon": "/components/fc-icon/index"
   }
 }
diff --git a/miniprogram/pages/collection/collection.wxml b/miniprogram/pages/collection/collection.wxml
index 9278f82..57f7604 100644
--- a/miniprogram/pages/collection/collection.wxml
+++ b/miniprogram/pages/collection/collection.wxml
@@ -8,8 +8,33 @@
       <view class="intro__sub">从新手入门到高级挑战，分级规划你的每一次进阶</view>
     </view>
 
-    <block wx:if="{{groups.length}}">
-      <view class="group" wx:for="{{groups}}" wx:for-item="g" wx:key="level">
+    <view class="filterbar">
+      <scroll-view scroll-x class="filterbar__scroll">
+        <chip
+          wx:for="{{levels}}"
+          wx:key="value"
+          label="{{item.label}}"
+          value="{{item.value}}"
+          active="{{filterLevel === item.value}}"
+          bind:select="onFilter" />
+      </scroll-view>
+    </view>
+
+    <view class="searchbar">
+      <view class="searchbar__box">
+        <fc-icon name="search" size="28" color="var(--text-2)" />
+        <input
+          class="searchbar__input"
+          placeholder="搜索计划名称"
+          placeholder-class="ph"
+          value="{{keyword}}"
+          confirm-type="search"
+          bindinput="onSearch" />
+      </view>
+    </view>
+
+    <block wx:if="{{viewGroups.length}}">
+      <view class="group" wx:for="{{viewGroups}}" wx:for-item="g" wx:key="level">
         <section-header eyebrow="LEVEL" title="{{g.label}}" />
         <view class="grid">
           <view class="grid__item" wx:for="{{g.plans}}" wx:for-item="p" wx:key="slug">
@@ -21,7 +46,7 @@
       </view>
     </block>
 
-    <view wx:elif="{{!loading}}" class="empty">暂无官方计划</view>
+    <view wx:elif="{{!loading}}" class="empty">没有匹配的计划</view>
     <view wx:else class="empty">加载中…</view>
   </view>
 
diff --git a/miniprogram/pages/collection/collection.wxss b/miniprogram/pages/collection/collection.wxss
index dfd3d7a..ef08b5e 100644
--- a/miniprogram/pages/collection/collection.wxss
+++ b/miniprogram/pages/collection/collection.wxss
@@ -8,4 +8,17 @@
 .group + .group { margin-top: 36rpx; }
 .grid { display: flex; flex-wrap: wrap; gap: 18rpx; }
 .grid__item { width: calc((100% - 18rpx) / 2); }
+
+.filterbar { padding: 16rpx 32rpx 4rpx; }
+.filterbar__scroll { white-space: nowrap; }
+
+.searchbar { padding: 12rpx 32rpx; }
+.searchbar__box {
+  display: flex; align-items: center;
+  background: var(--surface); border: 1rpx solid var(--line);
+  border-radius: 999rpx; padding: 20rpx 28rpx;
+}
+.searchbar__input { flex: 1; color: var(--text); font-size: 28rpx; }
+.ph { color: var(--text-3); }
+
 .empty { color: var(--text-3); font-size: 26rpx; text-align: center; padding: 80rpx 0; }
diff --git a/miniprogram/pages/detail/detail.js b/miniprogram/pages/detail/detail.js
index c0149af..7ee89f0 100644
--- a/miniprogram/pages/detail/detail.js
+++ b/miniprogram/pages/detail/detail.js
@@ -68,7 +68,9 @@ Page({
     }).catch(() => {});
   },
 
-  // 底部主按钮：加入计划（真实选择器）
+  // 底部主按钮：加入计划
+  // - 若从某计划内进入（带 planId），直接加入该计划
+  // - 否则进入「加入计划」选择器页，可浏览全部计划并筛选
   onAdd() {
     if (this.data.planId) {
       planSvc.addExercise(this.data.planId, this.data.id).then(() => {
@@ -77,28 +79,13 @@ Page({
       }).catch(() => {});
       return;
     }
-    auth.ensureLogin().then(() => planSvc.listMine()).then((res) => {
-      const plans = (res && res.items) || res || [];
-      if (!plans.length) {
-        wx.showModal({
-          title: '还没有训练计划',
-          content: '先创建一个计划，再把动作加进去吧～',
-          confirmText: '去创建',
-          cancelText: '稍后',
-          success: (r) => { if (r.confirm) wx.navigateTo({ url: '/pages/plan-edit/plan-edit' }); }
-        });
-        return;
-      }
-      const names = plans.slice(0, 6).map((p) => p.name);
-      wx.showActionSheet({
-        itemList: names,
-        success: (sheet) => {
-          const plan = plans[sheet.tapIndex];
-          if (!plan) return;
-          planSvc.addExercise(plan.id, this.data.id).then(() => {
-            wx.showToast({ title: '已加入「' + plan.name + '」', icon: 'success' });
-          }).catch(() => {});
-        }
+    auth.ensureLogin().then(() => {
+      const name = this.data.exercise
+        ? (this.data.exercise.displayName || this.data.exercise.name)
+        : '';
+      wx.navigateTo({
+        url: '/pages/plan-select/plan-select?exerciseId=' + encodeURIComponent(this.data.id) +
+          '&name=' + encodeURIComponent(name || '')
       });
     }).catch(() => {});
   },
diff --git a/miniprogram/pages/plan-select/plan-select.js b/miniprogram/pages/plan-select/plan-select.js
new file mode 100644
index 0000000..4c34e7b
--- /dev/null
+++ b/miniprogram/pages/plan-select/plan-select.js
@@ -0,0 +1,92 @@
+const app = getApp();
+const planSvc = require('../../services/plan');
+const auth = require('../../utils/auth');
+const { iconName } = require('../../utils/icon-name');
+
+// 加入计划选择器：从动作详情「加入计划」进入，默认展示我全部计划，
+// 支持 最近创建 / 动作最多 排序与名称搜索，点选即把动作加入该计划并返回。
+Page({
+  data: {
+    statusBarHeight: 20,
+    exerciseId: '',
+    exerciseName: '',
+    allPlans: [],
+    plans: [],
+    filter: 'all', // 'all' | 'recent' | 'count'
+    keyword: '',
+    status: 'loading', // 'loading' | 'list' | 'empty' | 'error'
+    errorMsg: ''
+  },
+
+  onLoad(query) {
+    this.setData({
+      statusBarHeight: app.globalData.statusBarHeight || 20,
+      exerciseId: query.exerciseId || '',
+      exerciseName: query.name || ''
+    });
+  },
+
+  onShow() {
+    if (auth.isLogin()) this.load();
+    else {
+      wx.showToast({ title: '请先登录', icon: 'none' });
+      setTimeout(() => wx.navigateBack(), 600);
+    }
+  },
+
+  load() {
+    this.setData({ status: 'loading', errorMsg: '' });
+    planSvc.listMine().then((res) => {
+      const raw = (res && res.items) || res || [];
+      const plans = raw.map((p) => ({ ...p, icon: iconName(p.emoji, 'folder-open') }));
+      this.setData({ allPlans: plans, status: plans.length ? 'list' : 'empty' });
+      this.applyFilter();
+    }).catch((err) => {
+      const status = err && err.statusCode;
+      const msg = status === 401 ? '登录已失效，请重新登录' : '加载失败，请检查网络后重试';
+      this.setData({ status: 'error', errorMsg: msg });
+    });
+  },
+
+  // 排序 + 名称搜索（纯前端，基于已有字段 createdAt / exerciseCount / name）
+  applyFilter() {
+    const f = this.data.filter;
+    let list = (this.data.allPlans || []).slice();
+    const k = (this.data.keyword || '').trim().toLowerCase();
+    if (k) list = list.filter((p) => (p.name || '').toLowerCase().includes(k));
+    if (f === 'recent') list.sort((a, b) => (a.createdAt < b.createdAt ? 1 : -1));
+    else if (f === 'count') list.sort((a, b) => b.exerciseCount - a.exerciseCount);
+    this.setData({ plans: list });
+  },
+
+  onFilter(e) {
+    this.setData({ filter: e.detail.value }, () => this.applyFilter());
+  },
+
+  onSearch(e) {
+    this.setData({ keyword: e.detail.value }, () => this.applyFilter());
+  },
+
+  onSelect(e) {
+    const id = e.currentTarget.dataset.id;
+    const name = e.currentTarget.dataset.name || '';
+    if (!id || !this.data.exerciseId) return;
+    wx.showLoading({ title: '加入中…', mask: true });
+    planSvc.addExercise(id, this.data.exerciseId).then(() => {
+      wx.hideLoading();
+      wx.showToast({ title: name ? ('已加入「' + name + '」') : '已加入计划', icon: 'success' });
+      setTimeout(() => wx.navigateBack(), 400);
+    }).catch(() => {
+      wx.hideLoading();
+      wx.showToast({ title: '加入失败，请重试', icon: 'none' });
+    });
+  },
+
+  onCreate() {
+    wx.navigateTo({ url: '/pages/plan-edit/plan-edit' });
+  },
+
+  onRetry() {
+    this.load();
+  }
+});
diff --git a/miniprogram/pages/plan-select/plan-select.json b/miniprogram/pages/plan-select/plan-select.json
new file mode 100644
index 0000000..2264ab9
--- /dev/null
+++ b/miniprogram/pages/plan-select/plan-select.json
@@ -0,0 +1,9 @@
+{
+  "navigationStyle": "custom",
+  "usingComponents": {
+    "navbar": "/components/navbar/index",
+    "chip": "/components/chip/index",
+    "plan-card": "/components/plan-card/index",
+    "fc-icon": "/components/fc-icon/index"
+  }
+}
diff --git a/miniprogram/pages/plan-select/plan-select.wxml b/miniprogram/pages/plan-select/plan-select.wxml
new file mode 100644
index 0000000..5bfd544
--- /dev/null
+++ b/miniprogram/pages/plan-select/plan-select.wxml
@@ -0,0 +1,56 @@
+<view class="page">
+  <navbar title="加入计划" show-back />
+
+  <view class="hint" wx:if="{{exerciseName}}">将动作「{{exerciseName}}」加入以下计划：</view>
+
+  <view class="filterbar">
+    <scroll-view scroll-x class="filterbar__scroll">
+      <chip label="全部" value="all" active="{{filter === 'all'}}" bind:select="onFilter" />
+      <chip label="最近创建" value="recent" active="{{filter === 'recent'}}" bind:select="onFilter" />
+      <chip label="动作最多" value="count" active="{{filter === 'count'}}" bind:select="onFilter" />
+    </scroll-view>
+  </view>
+
+  <view class="searchbar">
+    <view class="searchbar__box">
+      <fc-icon name="search" size="28" color="var(--text-2)" />
+      <input
+        class="searchbar__input"
+        placeholder="搜索计划名称"
+        placeholder-class="ph"
+        value="{{keyword}}"
+        confirm-type="search"
+        bindinput="onSearch" />
+    </view>
+  </view>
+
+  <view class="section" style="padding-top: 8rpx;">
+    <view wx:if="{{status === 'list'}}" class="grid">
+      <view
+        class="grid__item"
+        wx:for="{{plans}}"
+        wx:key="id"
+        bindtap="onSelect"
+        data-id="{{item.id}}"
+        data-name="{{item.name}}">
+        <plan-card plan="{{item}}" />
+      </view>
+    </view>
+
+    <view wx:elif="{{status === 'empty'}}" class="empty-box">
+      <view class="empty-box__emoji"><fc-icon name="clipboard-list" size="64" color="var(--text-3)" /></view>
+      <view class="empty-box__t">还没有计划，先创建一个吧</view>
+      <view class="empty-box__btn" bindtap="onCreate">＋ 新建计划</view>
+    </view>
+
+    <view wx:elif="{{status === 'error'}}" class="empty-box">
+      <view class="empty-box__emoji"><fc-icon name="alert-circle" size="64" color="var(--danger)" /></view>
+      <view class="empty-box__t">{{errorMsg}}</view>
+      <view class="empty-box__btn" bindtap="onRetry">重新加载</view>
+    </view>
+
+    <view wx:else class="empty">加载中…</view>
+  </view>
+
+  <view style="height: 60rpx;"></view>
+</view>
diff --git a/miniprogram/pages/plan-select/plan-select.wxss b/miniprogram/pages/plan-select/plan-select.wxss
new file mode 100644
index 0000000..c10946e
--- /dev/null
+++ b/miniprogram/pages/plan-select/plan-select.wxss
@@ -0,0 +1,35 @@
+.page { min-height: 100vh; background: var(--bg-grad); }
+
+.hint {
+  padding: 16rpx 36rpx 0;
+  font-size: 24rpx;
+  color: var(--gold);
+}
+
+.filterbar { padding: 16rpx 32rpx 4rpx; }
+.filterbar__scroll { white-space: nowrap; }
+
+.searchbar { padding: 12rpx 32rpx; }
+.searchbar__box {
+  display: flex; align-items: center;
+  background: var(--surface); border: 1rpx solid var(--line);
+  border-radius: 999rpx; padding: 20rpx 28rpx;
+}
+.searchbar__input { flex: 1; color: var(--text); font-size: 28rpx; }
+.ph { color: var(--text-3); }
+
+.grid { display: flex; flex-wrap: wrap; gap: 18rpx; }
+.grid__item { width: calc((100% - 18rpx) / 2); }
+
+.empty { color: var(--text-3); font-size: 26rpx; text-align: center; padding: 80rpx 0; }
+
+.empty-box { display: flex; flex-direction: column; align-items: center; padding: 100rpx 40rpx; }
+.empty-box__emoji {
+  width: 160rpx; height: 160rpx; border-radius: 36rpx;
+  background: var(--surface-2); display: flex; align-items: center; justify-content: center;
+}
+.empty-box__t { font-size: 30rpx; color: var(--text-2); margin-top: 36rpx; text-align: center; }
+.empty-box__btn {
+  margin-top: 44rpx; padding: 24rpx 88rpx; border-radius: 999rpx;
+  background: var(--gold); color: var(--accent-on); font-weight: 700; font-size: 30rpx;
+}