diff --git a/src/App.vue b/src/App.vue
index b68600e7..0438c09b 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -291,7 +291,7 @@ useMitt.on(WsResponseMessageType.INVALID_USER, (param: { uid: string }) => {
   console.log('无效用户')
   const data = param
   // 消息列表删掉拉黑的发言
-  chatStore.filterUser(data.uid)
+  // chatStore.filterUser(data.uid)
   // 群成员列表删掉拉黑的用户
   groupStore.removeUserItem(data.uid)
 })
diff --git a/src/components/fileManager/FileContent.vue b/src/components/fileManager/FileContent.vue
index cd11b9fc..4ddd5833 100644
--- a/src/components/fileManager/FileContent.vue
+++ b/src/components/fileManager/FileContent.vue
@@ -86,6 +86,7 @@
 </template>
 
 <script setup lang="ts">
+import { sumBy } from 'es-toolkit'
 import ContextMenu from '@/components/common/ContextMenu.vue'
 import { useDownload } from '@/hooks/useDownload'
 import type { FileBody } from '@/services/types'
@@ -183,9 +184,7 @@ const displayedTimeGroupedFiles = computed(() => {
 })
 
 // 计算过滤后的文件总数
-const totalDisplayedFiles = computed(() =>
-  displayedTimeGroupedFiles.value.reduce((sum: number, group: TimeGroup) => sum + group.files.length, 0)
-)
+const totalDisplayedFiles = computed(() => sumBy(displayedTimeGroupedFiles.value, (group) => group.files.length))
 
 const { downloadFile } = useDownload()
 
diff --git a/src/components/rightBox/ApplyList.vue b/src/components/rightBox/ApplyList.vue
index dcfa2431..db0d2c0e 100644
--- a/src/components/rightBox/ApplyList.vue
+++ b/src/components/rightBox/ApplyList.vue
@@ -107,6 +107,7 @@
   </n-flex>
 </template>
 <script setup lang="ts">
+import { uniq } from 'es-toolkit'
 import type { NoticeItem } from '@/services/types.ts'
 import { NoticeType, RequestNoticeAgreeStatus } from '@/services/types.ts'
 import { useContactStore } from '@/stores/contacts.ts'
@@ -339,10 +340,7 @@ onMounted(() => {
 watch(
   () => applyList.value,
   (newList) => {
-    const roomIds = newList
-      .filter((item) => item.roomId && Number(item.roomId) > 0)
-      .map((item) => item.roomId)
-      .filter((roomId, index, array) => array.indexOf(roomId) === index)
+    const roomIds = uniq(newList.filter((item) => item.roomId && Number(item.roomId) > 0).map((item) => item.roomId))
 
     if (roomIds.length > 0) {
       // 批量加载群组信息
diff --git a/src/hooks/useReplaceMsg.ts b/src/hooks/useReplaceMsg.ts
index 09ac441a..e33471d4 100644
--- a/src/hooks/useReplaceMsg.ts
+++ b/src/hooks/useReplaceMsg.ts
@@ -81,7 +81,10 @@ export const useReplaceMsg = () => {
    */
   const getMessageSenderName = (message: MessageType, defaultName: string = '', roomId: string) => {
     if (!message?.fromUser?.uid) return defaultName
-    const session = chatStore.getSession(roomId)!
+    const session = chatStore.getSession(roomId)
+    // 防御性检查：如果 session 不存在，返回默认名称
+    if (!session) return defaultName
+
     if (session.type === RoomTypeEnum.GROUP) {
       const user = groupStore.getUser(roomId, message.fromUser.uid)
       return user?.myName || user?.name || ''
diff --git a/src/layout/left/components/definePlugins/Card.vue b/src/layout/left/components/definePlugins/Card.vue
index 705400c3..bb0f6796 100644
--- a/src/layout/left/components/definePlugins/Card.vue
+++ b/src/layout/left/components/definePlugins/Card.vue
@@ -144,6 +144,7 @@
 <script setup lang="ts">
 import { emitTo } from '@tauri-apps/api/event'
 import { WebviewWindow } from '@tauri-apps/api/webviewWindow'
+import { cloneDeep } from 'es-toolkit'
 import { PluginEnum } from '@/enums'
 import { pluginsList } from '@/layout/left/config.tsx'
 import { usePluginsStore } from '@/stores/plugins.ts'
@@ -156,7 +157,7 @@ const { page } = storeToRefs(settingStore)
 const { plugins } = storeToRefs(pluginsStore)
 const isCurrently = ref(-1)
 const allPlugins = ref([] as STO.Plugins<PluginEnum>[])
-const pluginsLists = ref<STO.Plugins<PluginEnum>[]>(JSON.parse(JSON.stringify(pluginsList.value)))
+const pluginsLists = ref<STO.Plugins<PluginEnum>[]>(cloneDeep(pluginsList.value))
 
 const handleState = (plugin: STO.Plugins<PluginEnum>) => {
   if (plugin.state === PluginEnum.INSTALLED) return
diff --git a/src/layout/left/components/definePlugins/List.vue b/src/layout/left/components/definePlugins/List.vue
index a33f17ee..e6c755a6 100644
--- a/src/layout/left/components/definePlugins/List.vue
+++ b/src/layout/left/components/definePlugins/List.vue
@@ -129,6 +129,7 @@
 <script setup lang="ts">
 import { emitTo } from '@tauri-apps/api/event'
 import { WebviewWindow } from '@tauri-apps/api/webviewWindow'
+import { cloneDeep } from 'es-toolkit'
 import FloatBlockList from '@/components/common/FloatBlockList.vue'
 import { PluginEnum } from '@/enums'
 import { pluginsList } from '@/layout/left/config.tsx'
@@ -139,7 +140,7 @@ const pluginsStore = usePluginsStore()
 const { plugins } = storeToRefs(pluginsStore)
 const isCurrently = ref(-1)
 const allPlugins = ref([] as STO.Plugins<PluginEnum>[])
-const pluginsLists = ref<STO.Plugins<PluginEnum>[]>(JSON.parse(JSON.stringify(pluginsList.value)))
+const pluginsLists = ref<STO.Plugins<PluginEnum>[]>(cloneDeep(pluginsList.value))
 
 const handleState = (plugin: STO.Plugins<PluginEnum>) => {
   if (plugin.state === PluginEnum.INSTALLED) return
diff --git a/src/mobile/components/my/MobileApplyList.vue b/src/mobile/components/my/MobileApplyList.vue
index 798f8e79..5f418ad4 100644
--- a/src/mobile/components/my/MobileApplyList.vue
+++ b/src/mobile/components/my/MobileApplyList.vue
@@ -111,6 +111,7 @@
   </n-flex>
 </template>
 <script setup lang="ts">
+import { uniq } from 'es-toolkit'
 import type { NoticeItem } from '@/services/types.ts'
 import { NoticeType, RequestNoticeAgreeStatus } from '@/services/types.ts'
 import { useContactStore } from '@/stores/contacts.ts'
@@ -343,10 +344,7 @@ onMounted(() => {
 watch(
   () => applyList.value,
   (newList) => {
-    const roomIds = newList
-      .filter((item) => item.roomId && Number(item.roomId) > 0)
-      .map((item) => item.roomId)
-      .filter((roomId, index, array) => array.indexOf(roomId) === index)
+    const roomIds = uniq(newList.filter((item) => item.roomId && Number(item.roomId) > 0).map((item) => item.roomId))
 
     if (roomIds.length > 0) {
       // 批量加载群组信息
diff --git a/src/plugins/dynamic/index.vue b/src/plugins/dynamic/index.vue
index 2e4d1127..7301166b 100644
--- a/src/plugins/dynamic/index.vue
+++ b/src/plugins/dynamic/index.vue
@@ -261,6 +261,7 @@
 </template>
 
 <script setup lang="ts">
+import { sumBy } from 'es-toolkit'
 import { WebviewWindow } from '@tauri-apps/api/webviewWindow'
 import { useUserStore } from '@/stores/user.ts'
 import { useContactStore } from '@/stores/contacts.ts'
@@ -336,11 +337,7 @@ interface CommentItem {
 }
 
 // 计算属性
-const unreadCount = computed(() => {
-  return dynamicList.value.reduce((total, feed) => {
-    return total + (feed.commentCount || 0)
-  }, 0)
-})
+const unreadCount = computed(() => sumBy(dynamicList.value, (feed) => feed.commentCount || 0))
 
 // 验证发布内容是否有效（只验证文本内容）
 const isPublishValid = computed(() => {
diff --git a/src/stores/chat.ts b/src/stores/chat.ts
index d612e7ca..03e1ad3f 100644
--- a/src/stores/chat.ts
+++ b/src/stores/chat.ts
@@ -1,6 +1,7 @@
 import { WebviewWindow } from '@tauri-apps/api/webviewWindow'
 import { info } from '@tauri-apps/plugin-log'
 import { sendNotification } from '@tauri-apps/plugin-notification'
+import pLimit from 'p-limit'
 import { defineStore } from 'pinia'
 import { useRoute } from 'vue-router'
 import { ErrorType } from '@/common/exception'
@@ -51,6 +52,8 @@ export const useChatStore = defineStore(
 
     // 会话列表
     const sessionList = ref<SessionItem[]>([])
+    // 会话列表的快速查找 Map，通过 roomId 进行 O(1) 查找
+    const sessionMap = ref<Record<string, SessionItem>>({})
     // 会话列表的加载状态
     const sessionOptions = reactive({ isLast: false, isLoading: false, cursor: '' })
 
@@ -114,9 +117,13 @@ export const useChatStore = defineStore(
     const isGroup = computed(() => globalStore.currentSession?.type === RoomTypeEnum.GROUP)
 
     // 获取当前会话信息的计算属性
-    const currentSessionInfo = computed(() =>
-      sessionList.value.find((session) => session.roomId === globalStore.currentSession?.roomId)
-    )
+    const currentSessionInfo = computed(() => {
+      const roomId = globalStore.currentSession?.roomId
+      if (!roomId) return undefined
+
+      // 直接从 sessionMap 中查找（页面刷新后会自动恢复）
+      return sessionMap.value[roomId]
+    })
 
     // 新消息计数相关的响应式数据
     const newMsgCount = reactive<Record<string, { count: number; isStart: boolean }>>({})
@@ -149,7 +156,13 @@ export const useChatStore = defineStore(
         return
       }
 
-      const roomId = globalStore.currentSession!.roomId
+      // 如果 currentSession 不存在，直接返回
+      if (!globalStore.currentSession?.roomId) {
+        console.warn('[changeRoom] currentSession 未初始化')
+        return
+      }
+
+      const roomId = globalStore.currentSession.roomId
 
       // 1. 清空当前房间的旧消息数据
       if (messageMap[roomId]) {
@@ -183,10 +196,12 @@ export const useChatStore = defineStore(
       }
 
       // 标记当前会话已读
-      const session = sessionList.value.find((s) => s.roomId === globalStore.currentSession!.roomId)
-      if (session?.unreadCount) {
-        markSessionRead(globalStore.currentSession!.roomId)
-        updateTotalUnreadCount()
+      if (globalStore.currentSession?.roomId) {
+        const session = sessionMap.value[globalStore.currentSession.roomId]
+        if (session?.unreadCount) {
+          markSessionRead(globalStore.currentSession.roomId)
+          updateTotalUnreadCount()
+        }
       }
 
       // 重置当前回复的消息
@@ -209,11 +224,44 @@ export const useChatStore = defineStore(
       return Object.values(messageMap[roomId]).sort((a, b) => Number(a.message.id) - Number(b.message.id))
     })
 
-    // 登录之后，加载一次所有会话的消息
+    /**
+     * 登录之后，加载一次所有会话的消息
+     * @description
+     * 使用受控并发加载（p-limit），避免大量会话时阻塞 UI
+     * - 优先加载最近活跃的会话
+     * - 限制并发数为 5，平衡性能和服务器压力
+     * - 使用 Promise.allSettled 确保部分失败不影响其他会话
+     */
     const setAllSessionMsgList = async (size = pageSize) => {
       await info('初始设置所有会话消息列表')
-      for (const session of sessionList.value) {
-        await getPageMsg(size, session.roomId, '', true)
+
+      if (sessionList.value.length === 0) return
+
+      // 按活跃时间排序，优先加载最近的会话
+      const sortedSessions = [...sessionList.value].sort((a, b) => b.activeTime - a.activeTime)
+
+      // 创建并发限制器（最多同时 5 个请求）
+      const limit = pLimit(5)
+
+      // 使用 p-limit 包装任务并执行
+      const tasks = sortedSessions.map((session) => limit(() => getPageMsg(size, session.roomId, '', true)))
+
+      // 并发执行所有任务
+      const results = await Promise.allSettled(tasks)
+
+      // 统计加载结果
+      const successCount = results.filter((r) => r.status === 'fulfilled').length
+      const failCount = results.filter((r) => r.status === 'rejected').length
+
+      await info(`会话消息加载完成: 成功 ${successCount}/${sortedSessions.length}, 失败 ${failCount}`)
+
+      // 记录失败的会话（可选）
+      if (failCount > 0) {
+        results.forEach((result, index) => {
+          if (result.status === 'rejected') {
+            console.warn(`会话 ${sortedSessions[index].roomId} 消息加载失败:`, result.reason)
+          }
+        })
       }
     }
 
@@ -282,6 +330,11 @@ export const useChatStore = defineStore(
         sessionList.value = [...data]
         sessionOptions.isLoading = false
 
+        // 同步更新 sessionMap
+        for (const session of sessionList.value) {
+          sessionMap.value[session.roomId] = session
+        }
+
         sortAndUniqueSessionList()
       } catch (e) {
         console.error('获取会话列表失败11:', e)
@@ -291,21 +344,30 @@ export const useChatStore = defineStore(
       }
     }
 
-    /** 会话列表去重并排序 */
+    /** 会话列表排序 */
     const sortAndUniqueSessionList = () => {
-      const temp: Record<string, SessionItem> = {}
-      for (const item of sessionList.value) {
-        temp[item.roomId] = item
-      }
-      sessionList.value.splice(0, sessionList.value.length, ...Object.values(temp))
+      // const temp: Record<string, SessionItem> = {}
+      // for (const item of sessionList.value) {
+      //   temp[item.roomId] = item
+      // }
+      // sessionList.value.splice(0, sessionList.value.length, ...Object.values(temp))
       sessionList.value.sort((pre, cur) => cur.activeTime - pre.activeTime)
     }
 
     // 更新会话
     const updateSession = (roomId: string, data: Partial<SessionItem>) => {
-      const index = sessionList.value.findIndex((session) => session.roomId === roomId)
-      if (index !== -1) {
-        sessionList.value[index] = { ...sessionList.value[index], ...data }
+      const session = sessionMap.value[roomId]
+      if (session) {
+        const updatedSession = { ...session, ...data }
+
+        // 同步更新 sessionList
+        const index = sessionList.value.findIndex((s) => s.roomId === roomId)
+        if (index !== -1) {
+          sessionList.value[index] = updatedSession
+        }
+
+        // 同步更新 sessionMap
+        sessionMap.value[roomId] = updatedSession
 
         // 如果更新了免打扰状态，需要重新计算全局未读数
         if ('muteNotification' in data) {
@@ -316,7 +378,8 @@ export const useChatStore = defineStore(
 
     // 更新会话最后活跃时间, 只要更新的过程中会话不存在，那么将会话刷新出来
     const updateSessionLastActiveTime = (roomId: string) => {
-      const session = sessionList.value.find((item) => item.roomId === roomId)
+      // O(1) 查找
+      const session = sessionMap.value[roomId]
       if (session) {
         Object.assign(session, { activeTime: Date.now() })
       } else {
@@ -328,13 +391,19 @@ export const useChatStore = defineStore(
     const addSession = async (roomId: string) => {
       const resp = await getSessionDetail({ id: roomId })
       sessionList.value.unshift(resp)
+      // 同步更新 sessionMap
+      sessionMap.value[roomId] = resp
       sortAndUniqueSessionList()
     }
 
     // 通过房间ID获取会话信息
     const getSession = (roomId: string) => {
-      const currentSession = roomId ? sessionList.value.find((item) => item.roomId === roomId) : sessionList.value[0]
-      return currentSession
+      if (!roomId) {
+        return sessionList.value[0]
+      }
+
+      // O(1) 查找（页面刷新后自动从持久化恢复）
+      return sessionMap.value[roomId]
     }
 
     // 推送消息
@@ -418,17 +487,17 @@ export const useChatStore = defineStore(
     }
 
     // 过滤掉拉黑用户的发言
-    const filterUser = (uid: string) => {
-      for (const roomId in messageMap) {
-        const messages = messageMap[roomId]
-        for (const msgId in messages) {
-          const msg = messages[msgId]
-          if (msg.fromUser.uid === uid) {
-            delete messages[msgId]
-          }
-        }
-      }
-    }
+    // const filterUser = (uid: string) => {
+    //   for (const roomId in messageMap) {
+    //     const messages = messageMap[roomId]
+    //     for (const msgId in messages) {
+    //       const msg = messages[msgId]
+    //       if (msg.fromUser.uid === uid) {
+    //         delete messages[msgId]
+    //       }
+    //     }
+    //   }
+    // }
 
     // 加载更多消息
     const loadMore = async (size?: number) => {
@@ -670,7 +739,8 @@ export const useChatStore = defineStore(
 
     // 标记已读数为 0
     const markSessionRead = (roomId: string) => {
-      const session = sessionList.value.find((s) => s.roomId === roomId)
+      // O(1) 查找
+      const session = sessionMap.value[roomId]
       if (session) {
         // 更新会话的未读数
         session.unreadCount = 0
@@ -687,9 +757,17 @@ export const useChatStore = defineStore(
 
     // 删除会话
     const removeSession = (roomId: string) => {
-      const index = sessionList.value.findIndex((session) => session.roomId === roomId)
-      if (index !== -1) {
-        sessionList.value.splice(index, 1)
+      const session = sessionMap.value[roomId]
+      if (session) {
+        // 从数组中删除
+        const index = sessionList.value.findIndex((s) => s.roomId === roomId)
+        if (index !== -1) {
+          sessionList.value.splice(index, 1)
+        }
+
+        // 从 map 中删除
+        delete sessionMap.value[roomId]
+
         if (globalStore.currentSessionRoomId === roomId) {
           globalStore.updateCurrentSessionRoomId(sessionList.value[0].roomId)
         }
@@ -861,7 +939,6 @@ export const useChatStore = defineStore(
       currentNewMsgCount,
       loadMore,
       currentMsgReply,
-      filterUser,
       sessionList,
       sessionOptions,
       getSessionList,
diff --git a/src/stores/fileDownload.ts b/src/stores/fileDownload.ts
index 2f517703..dc5d688e 100644
--- a/src/stores/fileDownload.ts
+++ b/src/stores/fileDownload.ts
@@ -1,5 +1,6 @@
 import { appDataDir, join, resourceDir } from '@tauri-apps/api/path'
 import { BaseDirectory, exists, writeFile } from '@tauri-apps/plugin-fs'
+import { sumBy } from 'es-toolkit'
 import { defineStore } from 'pinia'
 import { StoresEnum } from '@/enums'
 import type { FilesMeta } from '@/services/types'
@@ -244,7 +245,7 @@ export const useFileDownloadStore = defineStore(
         }
 
         // 合并所有数据块
-        const totalLength = chunks.reduce((sum, chunk) => sum + chunk.length, 0)
+        const totalLength = sumBy(chunks, (chunk) => chunk.length)
         const fileData = new Uint8Array(totalLength)
         let offset = 0
 
diff --git a/src/utils/UnreadCountManager.ts b/src/utils/UnreadCountManager.ts
index 36c1bf2e..c4fb414b 100644
--- a/src/utils/UnreadCountManager.ts
+++ b/src/utils/UnreadCountManager.ts
@@ -1,6 +1,7 @@
 import { WebviewWindow } from '@tauri-apps/api/webviewWindow'
 import { info } from '@tauri-apps/plugin-log'
 import { useDebounceFn } from '@vueuse/core'
+import { sumBy } from 'es-toolkit'
 import { NotificationTypeEnum } from '@/enums'
 import type { SessionItem } from '@/services/types'
 import { isMac } from '@/utils/PlatformConstants'
@@ -62,15 +63,12 @@ export class UnreadCountManager {
     info('[UnreadCountManager] 计算全局未读消息计数')
 
     // 计算总未读数
-    const totalUnread = sessionList.reduce((total, session) => {
-      // 免打扰的会话不计入全局未读数
+    const totalUnread = sumBy(sessionList, (session) => {
       if (session.muteNotification === NotificationTypeEnum.NOT_DISTURB) {
-        return total
+        return 0
       }
-      // 确保 unreadCount 是数字且不为负数
-      const unread = Math.max(0, session.unreadCount || 0)
-      return total + unread
-    }, 0)
+      return Math.max(0, session.unreadCount || 0)
+    })
 
     // 更新全局未读计数
     unReadMark.newMsgUnreadCount = totalUnread
diff --git a/src/views/Notify.vue b/src/views/Notify.vue
index 4b91c072..6a621550 100644
--- a/src/views/Notify.vue
+++ b/src/views/Notify.vue
@@ -52,6 +52,7 @@ import { type Event, emitTo } from '@tauri-apps/api/event'
 import { WebviewWindow } from '@tauri-apps/api/webviewWindow'
 import { info } from '@tauri-apps/plugin-log'
 import { useDebounceFn } from '@vueuse/core'
+import { sumBy } from 'es-toolkit'
 import { RoomTypeEnum } from '@/enums'
 import { useReplaceMsg } from '@/hooks/useReplaceMsg.ts'
 import { useWindow } from '@/hooks/useWindow.ts'
@@ -275,7 +276,7 @@ onMounted(async () => {
           return b.timestamp - a.timestamp
         })
 
-        msgCount.value = content.value.reduce((acc, group) => acc + group.messageCount, 0)
+        msgCount.value = sumBy(content.value, (group) => group.messageCount)
       }
     })