diff --git a/src/App.vue b/src/App.vue
index f16a66e..244161b 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, onMounted, onUnmounted } from "vue";
+import { ref, onMounted, onUnmounted, computed } from "vue";
 import { load } from "@tauri-apps/plugin-store";
 import { open } from "@tauri-apps/plugin-dialog";
 import { invoke } from "@tauri-apps/api/core";
@@ -13,9 +13,7 @@ interface TimelineItem {
   isNextDay?: boolean;
 }
 
-const PIXELS_PER_MINUTE = 1.5; // Controls the vertical stretch of the timeline
 const TOTAL_MINUTES = 24 * 60;
-const RULER_HEIGHT = TOTAL_MINUTES * PIXELS_PER_MINUTE;
 const TIME_OFFSET_MINUTES = 3 * 60; // 03:00 logical day start
 
 // --- State ---
@@ -32,10 +30,14 @@ const isSettingsOpen = ref(false);
 const mergeScreens = ref(false);
 const retainDays = ref(30);
 const captureInterval = ref(30);
+const timelineZoom = ref(1.5); // pixels per minute
 
 const hoveredTime = ref<string | null>(null);
 const timelineRef = ref<HTMLElement | null>(null);
 
+// Computed ruler height based on zoom
+const rulerHeight = computed(() => TOTAL_MINUTES * timelineZoom.value);
+
 let store: any = null;
 let captureUnlisten: any = null;
 
@@ -49,6 +51,8 @@ onMounted(async () => {
     mergeScreens.value = (await store.get("mergeScreens")) as boolean || false;
     retainDays.value = (await store.get("retainDays")) as number || 30;
     captureInterval.value = (await store.get("captureInterval")) as number || 30;
+    timelineZoom.value = (await store.get("timelineZoom")) as number || 1.5;
+    
     await invoke("update_interval", { seconds: captureInterval.value });
     isPaused.value = await invoke("get_pause_state");
     await loadTimeline();
@@ -82,6 +86,7 @@ const updateSettings = async () => {
   await store.set("mergeScreens", mergeScreens.value);
   await store.set("retainDays", retainDays.value);
   await store.set("captureInterval", captureInterval.value);
+  await store.set("timelineZoom", timelineZoom.value);
   await store.save();
   await invoke("update_interval", { seconds: captureInterval.value });
 };
@@ -146,7 +151,7 @@ const handleTimelineMouseMove = (e: MouseEvent) => {
   if (!timelineRef.value) return;
   const rect = timelineRef.value.getBoundingClientRect();
   const y = e.clientY - rect.top + timelineRef.value.scrollTop;
-  const logicalMin = Math.floor(y / PIXELS_PER_MINUTE);
+  const logicalMin = Math.floor(y / timelineZoom.value);
   
   if (logicalMin >= 0 && logicalMin < TOTAL_MINUTES) {
     hoveredTime.value = logicalMinutesToTime(logicalMin);
@@ -164,7 +169,7 @@ const handleTimelineClick = (e: MouseEvent) => {
   if (!timelineRef.value) return;
   const rect = timelineRef.value.getBoundingClientRect();
   const y = e.clientY - rect.top + timelineRef.value.scrollTop;
-  const logicalMin = Math.floor(y / PIXELS_PER_MINUTE);
+  const logicalMin = Math.floor(y / timelineZoom.value);
   
   const closest = findClosestImage(logicalMin);
   if (closest) {
@@ -173,6 +178,15 @@ const handleTimelineClick = (e: MouseEvent) => {
   }
 };
 
+const handleTimelineWheel = (e: WheelEvent) => {
+  if (e.ctrlKey) {
+    e.preventDefault();
+    const delta = e.deltaY > 0 ? -0.2 : 0.2;
+    timelineZoom.value = Math.min(Math.max(0.5, timelineZoom.value + delta), 15);
+    updateSettings();
+  }
+};
+
 </script>
 
 <template>
@@ -199,19 +213,33 @@ const handleTimelineClick = (e: MouseEvent) => {
       <!-- Vertical Ruler Sidebar -->
       <div class="w-72 bg-[#F8FAFD] border-r border-[#E5E5E7] flex flex-col select-none relative">
         <!-- Date Picker Header -->
-        <div class="p-6 bg-[#F8FAFD]/80 backdrop-blur-md sticky top-0 z-20 border-b border-[#E5E5E7]/50">
+          <div class="p-6 bg-[#F8FAFD]/80 backdrop-blur-md sticky top-0 z-20 border-b border-[#E5E5E7]/50">
           <div class="flex items-center justify-between mb-4">
             <h2 class="text-lg font-bold tracking-tight">历史活动</h2>
             <button @click="loadTimeline" class="p-2 hover:bg-white rounded-xl transition-colors text-[#86868B] hover:text-[#007AFF]">
               <RefreshCw :size="18" />
             </button>
           </div>
-          <input 
-            type="date" 
-            v-model="currentDate" 
-            @change="loadTimeline"
-            class="w-full bg-white border border-[#E5E5E7] rounded-xl px-4 py-2.5 text-sm font-medium focus:ring-2 focus:ring-[#007AFF]/20 focus:border-[#007AFF] outline-none transition-all"
-          />
+          <div class="space-y-4">
+            <input 
+              type="date" 
+              v-model="currentDate" 
+              @change="loadTimeline"
+              class="w-full bg-white border border-[#E5E5E7] rounded-xl px-4 py-2 text-sm font-medium focus:ring-2 focus:ring-[#007AFF]/20 focus:border-[#007AFF] outline-none transition-all"
+            />
+            <div class="flex items-center gap-3 px-1">
+               <span class="text-[10px] font-bold text-[#86868B]">缩放</span>
+               <input 
+                type="range" 
+                v-model.number="timelineZoom" 
+                min="0.5" 
+                max="10" 
+                step="0.1"
+                @change="updateSettings"
+                class="flex-1 h-1 bg-[#E5E5E7] rounded-full appearance-none cursor-pointer accent-[#007AFF]"
+               />
+            </div>
+          </div>
         </div>
 
         <!-- Scrollable Ruler -->
@@ -221,13 +249,14 @@ const handleTimelineClick = (e: MouseEvent) => {
           @mousemove="handleTimelineMouseMove"
           @mouseleave="handleTimelineMouseLeave"
           @click="handleTimelineClick"
+          @wheel="handleTimelineWheel"
         >
           <!-- Ruler Canvas -->
-          <div :style="{ height: RULER_HEIGHT + 'px' }" class="relative ml-16">
+          <div :style="{ height: rulerHeight + 'px' }" class="relative ml-16">
             <!-- Hour Markers (Starting from 03:00) -->
             <div v-for="h in 24" :key="h" 
               class="absolute left-0 w-full border-t border-[#E5E5E7]/60 flex items-start"
-              :style="{ top: (h-1) * 60 * PIXELS_PER_MINUTE + 'px' }"
+              :style="{ top: (h-1) * 60 * timelineZoom + 'px' }"
             >
               <span class="absolute -left-12 -top-2.5 text-[10px] font-bold text-[#86868B] tracking-tighter">
                 {{ String((h - 1 + 3) % 24).padStart(2, '0') }}:00
@@ -243,14 +272,14 @@ const handleTimelineClick = (e: MouseEvent) => {
                 selectedImage?.path === img.path ? 'bg-[#007AFF]/60 h-2 shadow-sm z-10' : '',
                 lockedImage?.path === img.path ? 'bg-[#007AFF] h-2.5 ring-2 ring-[#007AFF]/20 z-20' : ''
               ]"
-              :style="{ top: timeToLogicalMinutes(img.time, img.isNextDay) * PIXELS_PER_MINUTE + 'px' }"
+              :style="{ top: timeToLogicalMinutes(img.time, img.isNextDay) * timelineZoom + 'px' }"
             ></div>
 
             <!-- Hover Cursor Line -->
             <div 
               v-if="hoveredTime"
               class="absolute left-0 right-0 border-t-2 border-[#007AFF] z-30 pointer-events-none"
-              :style="{ top: timeToLogicalMinutes(hoveredTime, hoveredTime < '03:00' && hoveredTime >= '00:00' && hoveredTime !== '03:00') * PIXELS_PER_MINUTE + 'px' }"
+              :style="{ top: timeToLogicalMinutes(hoveredTime, hoveredTime < '03:00' && hoveredTime >= '00:00' && hoveredTime !== '03:00') * timelineZoom + 'px' }"
             >
                <div class="absolute -left-14 -top-3 bg-[#007AFF] text-white text-[10px] px-1.5 py-0.5 rounded font-bold shadow-sm">
                  {{ hoveredTime }}