diff --git a/src/components/SoftwareCard.vue b/src/components/SoftwareCard.vue
index c63e2b3..5d92ca7 100644
--- a/src/components/SoftwareCard.vue
+++ b/src/components/SoftwareCard.vue
@@ -34,29 +34,26 @@
           <span class="id-badge">{{ software.id }}</span>
         </div>
         <div class="version-info">
-          <!-- 情况 1: 已安装软件 (包含待更新状态) -->
-          <template v-if="isInstalled">
-            <span class="version-tag">当前: {{ software.version || '--' }}</span>
-            <!-- 仅在装机必备且当前版本低于推荐版本时显示 -->
-            <span 
-              v-if="software.recommended_version && isVersionLower(software.version, software.recommended_version)" 
-              class="version-tag recommended"
-            >
+          <!-- 情况 1: 已安装且有推荐/最新版本 -->
+          <template v-if="software.version">
+            <span class="version-tag">当前: {{ software.version }}</span>
+            <span v-if="software.recommended_version && software.actionLabel === '更新'" class="version-tag recommended">
               推荐: {{ software.recommended_version }}
             </span>
-          </template>
-          
-          <!-- 情况 2: 未安装软件 -->
-          <template v-else>
-            <span class="version-tag recommended">
-              推荐: {{ software.recommended_version || '最新版' }}
+            <span v-if="software.available_version && !software.recommended_version" class="version-tag available">
+              最新: {{ software.available_version }}
             </span>
           </template>
           
-          <!-- 情况 3: WinGet 检测到的仓库最新版本 -->
-          <span class="version-tag available" v-if="software.available_version">
-            最新: {{ software.available_version }}
-          </span>
+          <!-- 情况 2: 未安装 -->
+          <template v-else>
+            <span v-if="software.recommended_version" class="version-tag recommended">
+              推荐: {{ software.recommended_version }}
+            </span>
+            <span v-else-if="software.available_version" class="version-tag available">
+              最新: {{ software.available_version }}
+            </span>
+          </template>
         </div>
       </div>
     </div>
@@ -65,7 +62,7 @@
       <div class="action-wrapper">
         <button 
           v-if="software.status === 'idle'" 
-          @click.stop="$emit('install', software.id)"
+          @click.stop="$emit('install', software.id, (software as any).targetVersion)"
           class="action-btn install-btn"
         >
           {{ actionLabel }}
@@ -104,7 +101,7 @@
 
         <button 
           v-else-if="software.status === 'error'" 
-          @click.stop="$emit('install', software.id)"
+          @click.stop="$emit('install', software.id, (software as any).targetVersion)"
           class="action-btn retry-btn"
         >
           重试
@@ -128,8 +125,8 @@ const props = defineProps<{
     icon_url?: string;
     status: string;
     progress: number;
-    use_manifest?: boolean;
-    manifest_url?: string;
+    actionLabel?: string;
+    targetVersion?: string;
   },
   actionLabel?: string,
   selectable?: boolean,
@@ -143,37 +140,6 @@ const displayProgress = computed(() => {
   return Math.round(props.software.progress * 100) + '%';
 });
 
-const isInstalled = computed(() => {
-  return props.software.status === 'installed' || 
-         (props.software.status === 'idle' && props.actionLabel === '更新') ||
-         (props.software.status === 'idle' && !props.actionLabel && props.software.version);
-});
-
-const isVersionLower = (current: string | undefined | null, target: string | undefined | null) => {
-  if (!current || !target) return false;
-  if (current === target) return false;
-  
-  // 处理常见的版本号格式，如 "v1.2.3" -> "1.2.3"
-  const cleanV = (v: string) => v.replace(/^v/i, '').split(/[-+]/)[0];
-  const v1 = cleanV(current).split('.');
-  const v2 = cleanV(target).split('.');
-  const len = Math.max(v1.length, v2.length);
-  
-  for (let i = 0; i < len; i++) {
-    const n1 = parseInt(v1[i] || '0', 10);
-    const n2 = parseInt(v2[i] || '0', 10);
-    
-    if (n1 < n2) return true;
-    if (n1 > n2) return false;
-    
-    // 如果数字相等但字符串不等（如 1.0b vs 1.0a），进行字符串比对
-    if (isNaN(n1) || isNaN(n2)) {
-      if (v1[i] !== v2[i]) return (v1[i] || '') < (v2[i] || '');
-    }
-  }
-  return false;
-};
-
 const placeholderColor = computed(() => {
   const colors = ['#FF9500', '#FF3B30', '#34C759', '#007AFF', '#5856D6', '#AF52DE'];
   let hash = 0;
diff --git a/src/store/software.ts b/src/store/software.ts
index 3a4d609..c80fa34 100644
--- a/src/store/software.ts
+++ b/src/store/software.ts
@@ -4,6 +4,23 @@ import { listen } from '@tauri-apps/api/event'
 
 const sortByName = (a: any, b: any) => a.name.localeCompare(b.name, 'zh-CN', { sensitivity: 'accent' });
 
+// 版本比对工具函数
+const compareVersions = (v1: string | null | undefined, v2: string | null | undefined) => {
+  if (!v1 || !v2) return 0;
+  if (v1 === v2) return 0;
+  const cleanV = (v: string) => v.replace(/^v/i, '').split(/[-+]/)[0].split('.');
+  const p1 = cleanV(v1);
+  const p2 = cleanV(v2);
+  const len = Math.max(p1.length, p2.length);
+  for (let i = 0; i < len; i++) {
+    const n1 = parseInt(p1[i] || '0', 10);
+    const n2 = parseInt(p2[i] || '0', 10);
+    if (n1 < n2) return -1;
+    if (n1 > n2) return 1;
+  }
+  return 0;
+};
+
 export interface LogEntry {
   id: string; // 日志唯一标识
   timestamp: string;
@@ -24,7 +41,7 @@ export const useSoftwareStore = defineStore('software', {
     settings: {
       repo_url: 'https://karlblue.github.io/winget-repo'
     },
-    activeTasks: {} as Record<string, { status: string, progress: number }>,
+    activeTasks: {} as Record<string, { status: string, progress: number, targetVersion?: string }>,
     loading: false,
     isInitialized: false,
     initStatus: '正在检查系统环境...',
@@ -34,36 +51,44 @@ export const useSoftwareStore = defineStore('software', {
     mergedEssentials: (state) => {
       return state.essentials.map(item => {
         const installedInfo = state.allSoftware.find(s => s.id.toLowerCase() === item.id.toLowerCase());
-        const isInstalled = !!installedInfo;
-        const hasUpdate = state.updates.some(s => s.id.toLowerCase() === item.id.toLowerCase());
+        const wingetUpdate = state.updates.find(s => s.id.toLowerCase() === item.id.toLowerCase());
         
-        // 优先使用 activeTasks 中的实时状态
         const task = state.activeTasks[item.id];
-        let displayStatus = task ? task.status : item.status;
-        let displayProgress = task ? task.progress : item.progress;
+        const isInstalled = !!installedInfo;
+        const currentVersion = installedInfo?.version;
+        const recommendedVersion = item.version; // 清单里的推荐版本
+        const availableVersion = wingetUpdate?.available_version; // Winget 查到的最新版
         
+        let displayStatus = task ? task.status : 'idle';
         let actionLabel = '安装';
-        
-        // 统一字段：version 始终代表当前安装的版本，recommended_version 代表清单推荐的版本
-        const currentVersion = installedInfo ? installedInfo.version : null;
-        const recommendedVersion = item.version;
-        
+        let targetVersion = recommendedVersion || availableVersion;
+
         if (isInstalled) {
-          if (hasUpdate) {
-            actionLabel = '更新';
-          } else if (displayStatus === 'idle') {
-            displayStatus = 'installed';
+          // 逻辑：已安装 >= 推荐 -> 已安装（禁用）
+          // 逻辑：已安装 < 推荐 -> 更新
+          const comp = compareVersions(currentVersion, recommendedVersion);
+          if (comp >= 0) {
+            displayStatus = task ? task.status : 'installed';
             actionLabel = '已安装';
+            targetVersion = undefined; // 禁用安装
+          } else {
+            actionLabel = '更新';
+            targetVersion = recommendedVersion;
           }
+        } else {
+          actionLabel = '安装';
+          targetVersion = recommendedVersion || availableVersion;
         }
-        
+
         return { 
           ...item, 
           version: currentVersion, 
           recommended_version: recommendedVersion,
+          available_version: availableVersion,
           status: displayStatus,
-          progress: displayProgress,
-          actionLabel 
+          progress: task ? task.progress : 0,
+          actionLabel,
+          targetVersion // 传递给视图，用于点击安装
         };
       });
     },
@@ -72,8 +97,10 @@ export const useSoftwareStore = defineStore('software', {
         const task = state.activeTasks[item.id];
         return {
           ...item,
-          status: task ? task.status : item.status,
-          progress: task ? task.progress : item.progress
+          status: task ? task.status : 'idle',
+          progress: task ? task.progress : 0,
+          actionLabel: '更新',
+          targetVersion: item.available_version // 更新页面永远追求最新版
         };
       }).sort(sortByName);
     },
@@ -84,6 +111,7 @@ export const useSoftwareStore = defineStore('software', {
     }
   },
   actions: {
+    // ... (initializeApp, saveSettings, syncEssentials stay the same)
     async initializeApp() {
       if (this.isInitialized) return;
       this.initStatus = '正在加载应用配置...';
@@ -113,7 +141,6 @@ export const useSoftwareStore = defineStore('software', {
       }
     },
 
-    // ... (Selection methods stay the same)
     toggleSelection(id: string, type: 'essential' | 'update') {
       if (this.isBusy) return;
       const list = type === 'essential' ? this.selectedEssentialIds : this.selectedUpdateIds;
@@ -123,7 +150,7 @@ export const useSoftwareStore = defineStore('software', {
     },
     selectAll(type: 'essential' | 'update') {
       if (type === 'essential') {
-        const selectable = this.mergedEssentials.filter(s => s.status !== 'installed');
+        const selectable = this.mergedEssentials.filter(s => s.actionLabel !== '已安装');
         this.selectedEssentialIds = selectable.map(s => s.id);
       } else {
         this.selectedUpdateIds = this.updates.map(s => s.id);
@@ -135,7 +162,7 @@ export const useSoftwareStore = defineStore('software', {
     },
     invertSelection(type: 'essential' | 'update') {
       if (type === 'essential') {
-        const selectable = this.mergedEssentials.filter(s => s.status !== 'installed').map(s => s.id);
+        const selectable = this.mergedEssentials.filter(s => s.actionLabel !== '已安装').map(s => s.id);
         this.selectedEssentialIds = selectable.filter(id => !this.selectedEssentialIds.includes(id));
       } else {
         const selectable = this.updates.map(s => s.id);
@@ -145,8 +172,6 @@ export const useSoftwareStore = defineStore('software', {
 
     async fetchEssentials() {
       let repo = await invoke('get_essentials') as any;
-      
-      // 如果本地没有文件，则尝试联网获取一次
       if (!repo) {
         try {
           await invoke('sync_essentials');
@@ -155,7 +180,6 @@ export const useSoftwareStore = defineStore('software', {
           console.error('Initial sync failed:', err);
         }
       }
-
       if (repo) {
         this.essentials = repo.essentials;
         this.essentialsVersion = repo.version;
@@ -188,15 +212,11 @@ export const useSoftwareStore = defineStore('software', {
     async fetchAllData() {
       this.loading = true;
       try {
-        // 先确保加载了必备清单（内部处理本地缺失逻辑）
         await this.fetchEssentials();
-        
-        // 然后同步本地软件安装/更新状态，不再强制联网下载 JSON
         const [all, updates] = await Promise.all([
           invoke('get_installed_software'),
           invoke('get_updates')
         ]);
-        
         this.allSoftware = all as any[];
         this.updates = updates as any[];
         this.lastFetched = Date.now();
@@ -205,16 +225,15 @@ export const useSoftwareStore = defineStore('software', {
         this.loading = false;
       }
     },
-    async install(id: string) {
+    async install(id: string, targetVersion?: string) {
       const software = this.findSoftware(id)
       if (software) {
-        // 使用 activeTasks 记录任务，而不是修改原始对象
-        this.activeTasks[id] = { status: 'pending', progress: 0 };
+        this.activeTasks[id] = { status: 'pending', progress: 0, targetVersion };
         try {
           await invoke('install_software', { 
             task: {
               id, 
-              version: software.recommended_version || software.available_version || software.version,
+              version: targetVersion,
               use_manifest: software.use_manifest || false,
               manifest_url: software.manifest_url || null
             }
@@ -226,7 +245,6 @@ export const useSoftwareStore = defineStore('software', {
       }
     },
     findSoftware(id: string) {
-      // findSoftware 现在仅用于获取软件的基础元数据（ID, 清单 URL 等）
       return this.essentials.find(s => s.id === id) || 
              this.updates.find(s => s.id === id) || 
              this.allSoftware.find(s => s.id === id)
@@ -237,42 +255,30 @@ export const useSoftwareStore = defineStore('software', {
 
       listen('install-status', (event: any) => {
         const { id, status, progress } = event.payload
-        
-        // 直接更新 activeTasks，Getter 会自动响应
-        this.activeTasks[id] = { status, progress };
+        const task = this.activeTasks[id];
+        this.activeTasks[id] = { status, progress, targetVersion: task?.targetVersion };
         
         if (status === 'success') {
           this.lastFetched = 0;
           this.selectedEssentialIds = this.selectedEssentialIds.filter(i => i !== id);
           this.selectedUpdateIds = this.selectedUpdateIds.filter(i => i !== id);
           
-          // 成功后延迟清理任务状态，让用户看到“已完成”
           setTimeout(() => {
-            // 如果在此期间没有开始新任务，则移除
             if (this.activeTasks[id]?.status === 'success') {
               delete this.activeTasks[id];
-              // 重新拉取数据以刷新已安装/待更新状态
               this.fetchAllData();
             }
           }, 3000);
         }
       })
 
-      // 日志监听：根据 ID 追加内容
       listen('log-event', (event: any) => {
         const payload = event.payload as LogEntry;
         const existingLog = this.logs.find(l => l.id === payload.id);
-        
         if (existingLog) {
-          // 如果是增量更新
-          if (payload.output) {
-            existingLog.output += '\n' + payload.output;
-          }
-          if (payload.status !== 'info') {
-            existingLog.status = payload.status;
-          }
+          if (payload.output) existingLog.output += '\n' + payload.output;
+          if (payload.status !== 'info') existingLog.status = payload.status;
         } else {
-          // 如果是新日志
           this.logs.unshift(payload);
           if (this.logs.length > 100) this.logs.pop();
         }
diff --git a/src/views/Essentials.vue b/src/views/Essentials.vue
index 8a00abc..10fa3ed 100644
--- a/src/views/Essentials.vue
+++ b/src/views/Essentials.vue
@@ -78,7 +78,10 @@ const selectableItems = computed(() => {
 
 const installSelected = () => {
   store.selectedEssentialIds.forEach(id => {
-    store.install(id);
+    const item = store.mergedEssentials.find(s => s.id === id);
+    if (item && item.targetVersion) {
+      store.install(id, item.targetVersion);
+    }
   });
 };
 
diff --git a/src/views/Updates.vue b/src/views/Updates.vue
index 2c8250a..9d9cc68 100644
--- a/src/views/Updates.vue
+++ b/src/views/Updates.vue
@@ -78,7 +78,10 @@ const store = useSoftwareStore();
 
 const updateSelected = () => {
   store.selectedUpdateIds.forEach(id => {
-    store.install(id);
+    const item = store.sortedUpdates.find(s => s.id === id);
+    if (item && item.targetVersion) {
+      store.install(id, item.targetVersion);
+    }
   });
 };