diff --git a/pages/timer/timer.js b/pages/timer/timer.js
index 1ed775a..da5ff6c 100644
--- a/pages/timer/timer.js
+++ b/pages/timer/timer.js
@@ -4,13 +4,14 @@ const planMod = require('../../utils/plan')
 const themeMod = require('../../utils/theme')
 const iconsMod = require('../../utils/icons')
 const voice = require('../../utils/voice')
+const { countUp } = require('../../utils/countUp')
 
 Page({
   data: {
     theme: { primary: '#FF6B35', primaryLight: '#FF8C5A', primaryBg: '#FFF3ED', primaryRgb: '255,107,53' },
     themeStyle: themeMod.BASE_VARS,
     duration: 60,
-    remaining: 60,
+    remaining: 0,
     status: 'idle',
     isRunning: false,
     isPaused: false,
@@ -25,6 +26,16 @@ Page({
   onLoad(options) {
     themeMod.applyThemeToPage(this)
     this._init(options)
+    // countUp: 数字从 0 滚到目标秒数
+    const target = this.data.duration
+    if (this._countUpTask) this._countUpTask.cancel()
+    this._countUpTask = countUp({
+      from: 0,
+      to: target,
+      duration: 600,
+      onUpdate: (v) => this.setData({ remaining: v }),
+      onComplete: () => { this._countUpTask = null }
+    })
   },
 
   onShow() {
@@ -158,6 +169,10 @@ Page({
       this._timer.stop()
       this._timer = null
     }
+    if (this._countUpTask) {
+      this._countUpTask.cancel()
+      this._countUpTask = null
+    }
   },
 
   onStart() {
@@ -167,6 +182,12 @@ Page({
       return
     }
     if (this.data.isRunning) return
+    // 取消可能还在滚的 countUp,确保 remaining = duration
+    if (this._countUpTask) {
+      this._countUpTask.cancel()
+      this._countUpTask = null
+      this.setData({ remaining: this.data.duration })
+    }
     this._timer.start(this.data.duration)
     this.setData({ isRunning: true, status: 'running' })
     const s = storage.getSettings()