diff --git a/apps/miniprogram/src/pages/health/trend/index.tsx b/apps/miniprogram/src/pages/health/trend/index.tsx
index ddf151f..5ccb7da 100644
--- a/apps/miniprogram/src/pages/health/trend/index.tsx
+++ b/apps/miniprogram/src/pages/health/trend/index.tsx
@@ -1,7 +1,8 @@
 import { useState, useEffect } from 'react';
 import { View, Text } from '@tarojs/components';
 import Taro, { useRouter } from '@tarojs/taro';
-import { useHealthStore } from '../../../stores/health';
+import { useHealthStore } from '@/stores/health';
+import TrendChart from '@/components/TrendChart';
 import './index.scss';
 
 const RANGE_OPTIONS = [
@@ -10,6 +11,15 @@ const RANGE_OPTIONS = [
   { value: '90d', label: '90天' },
 ];
 
+const INDICATOR_META: Record<string, { label: string; unit: string; refMin?: number; refMax?: number }> = {
+  blood_pressure_systolic: { label: '收缩压', unit: 'mmHg', refMin: 90, refMax: 140 },
+  blood_pressure_diastolic: { label: '舒张压', unit: 'mmHg', refMin: 60, refMax: 90 },
+  heart_rate: { label: '心率', unit: 'bpm', refMin: 60, refMax: 100 },
+  blood_sugar_fasting: { label: '空腹血糖', unit: 'mmol/L', refMin: 3.9, refMax: 6.1 },
+  blood_sugar_postprandial: { label: '餐后血糖', unit: 'mmol/L', refMin: 3.9, refMax: 7.8 },
+  weight: { label: '体重', unit: 'kg' },
+};
+
 export default function Trend() {
   const router = useRouter();
   const indicator = router.params.indicator || 'heart_rate';
@@ -21,12 +31,12 @@ export default function Trend() {
     getTrend(indicator, range).then(setPoints);
   }, [indicator, range]);
 
-  const maxVal = points.length ? Math.max(...points.map((p) => p.value)) : 1;
+  const meta = INDICATOR_META[indicator] || { label: indicator, unit: '' };
 
   return (
     <View className='trend-page'>
       <View className='trend-header'>
-        <Text className='trend-title'>{indicator.replace(/_/g, ' ')} 趋势</Text>
+        <Text className='trend-title'>{meta.label} 趋势</Text>
         <View className='trend-tabs'>
           {RANGE_OPTIONS.map((opt) => (
             <View
@@ -40,34 +50,27 @@ export default function Trend() {
         </View>
       </View>
 
-      {/* 简易柱状图 */}
-      <View className='trend-chart'>
-        {points.length === 0 ? (
-          <Text className='trend-empty'>暂无数据</Text>
-        ) : (
-          <View className='chart-bars'>
-            {points.slice(-14).map((p, i) => (
-              <View className='chart-bar-wrap' key={i}>
-                <View
-                  className='chart-bar'
-                  style={{ height: `${(p.value / maxVal) * 100}%` }}
-                />
-                <Text className='chart-bar-date'>{p.date.slice(5)}</Text>
-              </View>
-            ))}
-          </View>
-        )}
+      {/* ECharts 折线图 */}
+      <View className='trend-chart-container'>
+        <TrendChart
+          data={points}
+          referenceMin={meta.refMin}
+          referenceMax={meta.refMax}
+          unit={meta.unit}
+        />
       </View>
 
       {/* 数据列表 */}
-      <View className='trend-list'>
-        {points.slice().reverse().map((p, i) => (
-          <View className='trend-item' key={i}>
-            <Text className='trend-item-date'>{p.date}</Text>
-            <Text className='trend-item-value'>{p.value}</Text>
-          </View>
-        ))}
-      </View>
+      {points.length > 0 && (
+        <View className='trend-list'>
+          {points.slice().reverse().map((p, i) => (
+            <View className='trend-item' key={i}>
+              <Text className='trend-item-date'>{p.date}</Text>
+              <Text className='trend-item-value'>{p.value}{meta.unit ? ` ${meta.unit}` : ''}</Text>
+            </View>
+          ))}
+        </View>
+      )}
     </View>
   );
 }
diff --git a/apps/miniprogram/src/stores/health.ts b/apps/miniprogram/src/stores/health.ts
index 0184da9..7bc1971 100644
--- a/apps/miniprogram/src/stores/health.ts
+++ b/apps/miniprogram/src/stores/health.ts
@@ -1,14 +1,22 @@
 import { create } from 'zustand';
 import * as healthApi from '@/services/health';
 
+interface CachedTrend {
+  data: { date: string; value: number }[];
+  cachedAt: number;
+}
+
 interface HealthState {
   todaySummary: healthApi.TodaySummary | null;
-  trendData: Record<string, { date: string; value: number }[]>;
+  trendData: Record<string, CachedTrend>;
   loading: boolean;
   refreshToday: () => Promise<void>;
   getTrend: (indicator: string, range: string) => Promise<{ date: string; value: number }[]>;
+  clearCache: () => void;
 }
 
+const CACHE_TTL = 5 * 60 * 1000; // 5 分钟
+
 export const useHealthStore = create<HealthState>((set, get) => ({
   todaySummary: null,
   trendData: {},
@@ -27,15 +35,19 @@ export const useHealthStore = create<HealthState>((set, get) => ({
   getTrend: async (indicator: string, range: string) => {
     const cacheKey = `${indicator}_${range}`;
     const cached = get().trendData[cacheKey];
-    if (cached) return cached;
+    if (cached && Date.now() - cached.cachedAt < CACHE_TTL) {
+      return cached.data;
+    }
 
     try {
       const resp = await healthApi.getTrend(indicator, range);
       const points = resp.data_points || [];
-      set((s) => ({ trendData: { ...s.trendData, [cacheKey]: points } }));
+      set((s) => ({ trendData: { ...s.trendData, [cacheKey]: { data: points, cachedAt: Date.now() } } }));
       return points;
     } catch {
       return [];
     }
   },
+
+  clearCache: () => set({ trendData: {}, todaySummary: null }),
 }));