diff --git a/miniprogram/pages/plan-detail/plan-detail.js b/miniprogram/pages/plan-detail/plan-detail.js
index fb4fab1..49fcbec 100644
--- a/miniprogram/pages/plan-detail/plan-detail.js
+++ b/miniprogram/pages/plan-detail/plan-detail.js
@@ -8,18 +8,30 @@ Page({
     id: '',
     plan: null,
     exercises: [],
-    loading: true
+    loading: true,
+    error: false,
+    errorMsg: ''
   },
 
   onLoad(query) {
     const id = query.id || '';
-    this.setData({ statusBarHeight: app.globalData.statusBarHeight || 20, id });
+    const h = (app && app.globalData && app.globalData.statusBarHeight) || 20;
+    this.setData({ statusBarHeight: h, id });
     this.load();
   },
 
   load() {
-    this.setData({ loading: true });
-    planSvc.get(this.data.id).then((plan) => {
+    const id = this.data.id;
+    if (!id) {
+      this.setData({ loading: false, error: true, errorMsg: '缺少计划标识，无法打开' });
+      return;
+    }
+    this.setData({ loading: true, error: false });
+    planSvc.get(id).then((plan) => {
+      if (!plan || !plan.id) {
+        this.setData({ loading: false, error: true, errorMsg: '未找到该计划' });
+        return;
+      }
       const raw = plan && plan.updatedAt;
       const updatedAtText = typeof raw === 'string'
         ? raw.slice(0, 10)
@@ -27,13 +39,22 @@ Page({
       this.setData({
         plan: { ...plan, updatedAtText, icon: iconName(plan.emoji) },
         exercises: (plan && plan.exercises) || [],
-        loading: false
+        loading: false,
+        error: false
       });
-    }).catch(() => {
-      this.setData({ loading: false });
+    }).catch((err) => {
+      const status = err && err.statusCode;
+      const msg = status === 404
+        ? '未找到该计划'
+        : (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({ loading: false, error: true, errorMsg: msg });
     });
   },
 
+  onRetry() {
+    this.load();
+  },
+
   onRemoveExercise(e) {
     const exerciseId = e.currentTarget.dataset.id;
     planSvc.removeExercise(this.data.id, exerciseId).then(() => {
diff --git a/miniprogram/pages/plan-detail/plan-detail.wxml b/miniprogram/pages/plan-detail/plan-detail.wxml
index 9e40023..b77c862 100644
--- a/miniprogram/pages/plan-detail/plan-detail.wxml
+++ b/miniprogram/pages/plan-detail/plan-detail.wxml
@@ -35,5 +35,11 @@
 </view>
 
 <view wx:else class="empty-page">
-  <view class="empty">{{ loading ? '加载中…' : '未找到该计划' }}</view>
+  <view wx:if="{{loading}}" class="empty">加载中…</view>
+  <view wx:elif="{{error}}" class="empty-box">
+    <view class="empty-box__emoji"><fc-icon name="alert-circle" size="64" color="var(--text-3)" /></view>
+    <view class="empty-box__t">{{errorMsg || '加载失败'}}</view>
+    <view class="empty-box__btn" bindtap="onRetry">重试</view>
+  </view>
+  <view wx:else class="empty">未找到该计划</view>
 </view>