diff --git a/src/pages/vimp/components/alarm-tree.vue b/src/pages/vimp/components/alarm-tree.vue
index f753ad5..49ecffc 100644
--- a/src/pages/vimp/components/alarm-tree.vue
+++ b/src/pages/vimp/components/alarm-tree.vue
@@ -1,10 +1,11 @@
 <script setup lang="ts">
-import { NTabPane, NTabs, NTree, type TreeOverrideNodeClickBehavior, type TreeProps } from 'naive-ui';
+import { NIcon, NTabPane, NTabs, NTree, type TreeOverrideNodeClickBehavior, type TreeProps } from 'naive-ui';
 import { h, type CSSProperties } from 'vue';
 import { useAlarmStore, useResourcePanelStore } from '../stores';
 import { storeToRefs } from 'pinia';
 import { useDeviceCenterQuery } from '../composables';
 import { isAlarmNode, isAlarmSiteNode, isAlarmAreaNode } from '../types';
+import { SirenIcon } from 'lucide-vue-next';
 
 const { isLoading } = useDeviceCenterQuery();
 
@@ -77,6 +78,26 @@ const renderNodeLabel: TreeProps['renderLabel'] = ({ option }) => {
   return option.label;
 };
 
+const renderNodePrefix: TreeProps['renderPrefix'] = ({ option }) => {
+  if (!isAlarmNode(option)) return null;
+  return h(NIcon, () => h(SirenIcon));
+};
+
+const renderNodeSuffix: TreeProps['renderSuffix'] = ({ option }) => {
+  if (isAlarmSiteNode(option)) {
+    const { online, offline, total } = option.stats;
+    return `(${online}/${offline}/${total})`;
+  }
+
+  if (isAlarmAreaNode(option)) {
+    const { online, offline, total } = option.stats;
+    const suffixStyle: CSSProperties = option.areaLevel === 1 ? { marginRight: '8px', opacity: 0.6 } : { marginRight: '16px', opacity: 0.4 };
+    return h('div', { style: suffixStyle }, `(${online}/${offline}/${total})`);
+  }
+
+  return null;
+};
+
 const resourcePanelStore = useResourcePanelStore();
 const { searchPattern } = storeToRefs(resourcePanelStore);
 
@@ -98,6 +119,8 @@ const searchFilter: TreeProps['filter'] = (pattern, node) => {
       virtual-scroll
       style="height: 100%"
       :render-label="renderNodeLabel"
+      :render-prefix="renderNodePrefix"
+      :render-suffix="renderNodeSuffix"
       :override-default-node-click-behavior="overrideNodeClickBehavior"
       :default-expand-all="searchPattern.trim().length > 0"
       :show-irrelevant-nodes="false"
@@ -116,6 +139,8 @@ const searchFilter: TreeProps['filter'] = (pattern, node) => {
           virtual-scroll
           style="height: 100%"
           :render-label="renderNodeLabel"
+          :render-prefix="renderNodePrefix"
+          :render-suffix="renderNodeSuffix"
           :override-default-node-click-behavior="overrideNodeClickBehavior"
           :default-expand-all="false"
           :show-irrelevant-nodes="false"
diff --git a/src/pages/vimp/composables/query/use-device-center-query.ts b/src/pages/vimp/composables/query/use-device-center-query.ts
index 268fc64..15ff5c8 100644
--- a/src/pages/vimp/composables/query/use-device-center-query.ts
+++ b/src/pages/vimp/composables/query/use-device-center-query.ts
@@ -139,10 +139,7 @@ export const useDeviceCenterQuery = () => {
         siteCodeToAlarmsMap,
         codeLines,
         codeSites,
-        codeStationAreas,
-        codeParkingAreas,
-        codeOccAreas,
-        codeTrainAreas,
+        compiledCodeAreas,
       });
 
       return null;
diff --git a/src/pages/vimp/stores/alarm.ts b/src/pages/vimp/stores/alarm.ts
index 7fc35a1..9c65fa0 100644
--- a/src/pages/vimp/stores/alarm.ts
+++ b/src/pages/vimp/stores/alarm.ts
@@ -1,45 +1,52 @@
 import { defineStore } from 'pinia';
 import type { VimpChannel, VimpStation } from '../apis';
-import { h, shallowRef } from 'vue';
-import type { AlarmMainAreaNodeOption, AlarmNodeOption, CodeArea, CodeLines, CodeSites, AlarmLineTabPane, AlarmSiteNodeOption, AlarmSubAreaNodeOption } from '../types';
-import { NIcon } from 'naive-ui';
-import { SirenIcon } from 'lucide-vue-next';
+import { shallowRef } from 'vue';
+import type { AlarmMainAreaNodeOption, AlarmNodeOption, CodeLines, CodeSites, AlarmLineTabPane, AlarmSiteNodeOption, AlarmSubAreaNodeOption, CompiledCodeAreas } from '../types';
 
 interface BuildLineTabPanesParams {
   sites: VimpStation[];
   siteCodeToAlarmsMap: Map<string, VimpChannel[]>;
   codeLines: CodeLines;
   codeSites: CodeSites;
-  codeStationAreas: CodeArea[];
-  codeParkingAreas: CodeArea[];
-  codeOccAreas: CodeArea[];
-  codeTrainAreas: CodeArea[];
+  compiledCodeAreas: CompiledCodeAreas;
 }
 
+const buildMainAreaNodeKey = (siteCode: string, mainAreaCode: string) => `${siteCode}${mainAreaCode}`;
+const buildSubAreaNodeKey = (siteCode: string, areaCode: string) => `${siteCode}${areaCode}`;
+
 export const useAlarmStore = defineStore('vimp-alarm-store', () => {
   const lineTabPanes = shallowRef<AlarmLineTabPane[]>([]);
 
   const buildLineTabPanes = (params: BuildLineTabPanesParams) => {
-    const { sites, siteCodeToAlarmsMap, codeLines, codeSites, codeStationAreas, codeParkingAreas, codeOccAreas, codeTrainAreas } = params;
+    const { sites, siteCodeToAlarmsMap, codeLines, codeSites, compiledCodeAreas } = params;
 
-    // 线路TabPane
-    const _lineTabPanes: AlarmLineTabPane[] = [];
+    const result: AlarmLineTabPane[] = [];
+
+    // 1. 线路索引 lineCode -> AlarmLineTabPane
+    const linePaneMap = new Map<string, AlarmLineTabPane>();
 
     // 遍历所有站点
     for (const site of sites) {
+      // 2. 站点节点 siteNode 只在当前轮次中顺序创建，不需要建立索引
+
       const lineCode = site.code.substring(0, 3);
       const lineName = codeLines[lineCode]?.name ?? '';
-      if (!_lineTabPanes.some((lineNode) => lineNode.lineCode === lineCode)) {
-        _lineTabPanes.push({
-          lineCode,
-          lineName,
-          alarmTree: [],
-        });
+
+      let linePane = linePaneMap.get(lineCode);
+      if (!linePane) {
+        linePane = { lineCode, lineName, alarmTree: [] };
+        linePaneMap.set(lineCode, linePane);
+        result.push(linePane);
       }
 
       const siteCode = site.code;
-      const siteName = codeSites[siteCode]?.name;
-      if (!siteName) continue;
+      const siteMeta = codeSites[siteCode];
+      if (!siteMeta) continue;
+      const siteName = siteMeta.name;
+      const siteType = siteMeta.type;
+
+      const compiledCodeAreaMaps = compiledCodeAreas[siteType];
+      const mainAreaCodeLength = siteType === 'train' ? 3 : 2;
 
       // 构造站点节点
       const siteNode: AlarmSiteNodeOption = {
@@ -49,79 +56,76 @@ export const useAlarmStore = defineStore('vimp-alarm-store', () => {
         stats: { online: 0, offline: 0, total: 0 },
         online: site.online,
       };
-      _lineTabPanes.find((lineTabPane) => lineTabPane.lineCode === lineCode)?.alarmTree.push(siteNode);
+      linePane.alarmTree.push(siteNode);
 
       // 获取所有警报器
       const alarms = siteCodeToAlarmsMap.get(siteCode);
-      if (!alarms || alarms.length === 0) continue;
+      if (!alarms) continue;
+
+      // 3. 1级区域索引 mainAreaNodeKey -> AlarmMainAreaNodeOption
+      // mainAreaNodeKey = ${siteCode}${alarmMainAreaCode}
+      const mainAreaNodeMap = new Map<string, AlarmMainAreaNodeOption>();
+      // 4. 2级区域索引 subAreaNodeKey -> AlarmSubAreaNodeOption
+      // subAreaNodeKey = ${siteCode}${alarmAreaCode}
+      const subAreaNodeMap = new Map<string, AlarmSubAreaNodeOption>();
+      // 5. 警报器索引 subAreaNodeKey -> Set<AlarmGbCode>
+      const subAreaNodeKeyToAlarmGbCodeSetMap = new Map<string, Set<string>>();
 
       // 遍历警报器
       for (const alarm of alarms) {
         // 计算相关编码
         const { code: alarmGbCode, name: alarmName } = alarm;
-        const alarmSiteCode = alarmGbCode.substring(0, 6);
-        const alarmSiteType = codeSites[alarmSiteCode]?.type;
         const alarmAreaCode = alarmGbCode.substring(6, 11);
-        const alarmMainAreaCode = alarmAreaCode.slice(0, alarmSiteType === 'train' ? 3 : 2);
+        const alarmMainAreaCode = alarmAreaCode.slice(0, mainAreaCodeLength);
 
-        // 构造车站/基地/OCC/车次区域
-        let siteArea: CodeArea | undefined = undefined;
-        if (alarmSiteType === 'station') {
-          siteArea = codeStationAreas.find((area) => area.code === alarmMainAreaCode);
-        } else if (alarmSiteType === 'parking') {
-          siteArea = codeParkingAreas.find((area) => area.code === alarmMainAreaCode);
-        } else if (alarmSiteType === 'occ') {
-          siteArea = codeOccAreas.find((area) => area.code === alarmMainAreaCode);
-        } else if (alarmSiteType === 'train') {
-          siteArea = codeTrainAreas.find((area) => area.code === alarmMainAreaCode);
-        } else {
-          continue;
-        }
-        if (!siteArea) continue; // 如果还是未找到区域，则跳过该警报器
+        // 查找1级区域，如果未找到则跳过该警报器
+        const mainArea = compiledCodeAreaMaps.mainAreaMap.get(alarmMainAreaCode);
+        if (!mainArea) continue;
 
-        // 构造1级区域节点
-        if (!siteNode.children?.find((areaNode) => areaNode.key === `${alarmSiteCode}${alarmMainAreaCode}`)) {
-          const mainAreaNode: AlarmMainAreaNodeOption = {
-            key: `${alarmSiteCode}${alarmMainAreaCode}`,
-            label: siteArea.name,
+        // 尝试从索引中获取1级区域节点，若不存在则创建
+        const mainAreaNodeKey = buildMainAreaNodeKey(siteCode, alarmMainAreaCode);
+        let mainAreaNode = mainAreaNodeMap.get(mainAreaNodeKey);
+        if (!mainAreaNode) {
+          mainAreaNode = {
+            key: mainAreaNodeKey,
+            label: mainArea.name,
             children: [],
             stats: { online: 0, offline: 0, total: 0 },
             site: site,
+            areaLevel: 1,
           };
+          mainAreaNodeMap.set(mainAreaNodeKey, mainAreaNode);
           siteNode.children?.push(mainAreaNode);
         }
-        const targetMainAreaNode = siteNode.children?.find((areaNode) => areaNode.key === `${alarmSiteCode}${alarmMainAreaCode}`);
-        if (!targetMainAreaNode) continue; // 如果1级区域节点不存在，则跳过该警报器
 
-        // 构造2级区域节点
-        if (!targetMainAreaNode.children?.find((subAreaNode) => subAreaNode.key === `${alarmSiteCode}${alarmAreaCode}`)) {
-          let subArea: CodeArea['subs'][number] | undefined = undefined;
-          if (alarmSiteType === 'station') {
-            subArea = codeStationAreas.find((area) => area.code === alarmMainAreaCode)?.subs.find((subArea) => subArea.code === alarmAreaCode);
-          } else if (alarmSiteType === 'parking') {
-            subArea = codeParkingAreas.find((area) => area.code === alarmMainAreaCode)?.subs.find((subArea) => subArea.code === alarmAreaCode);
-          } else if (alarmSiteType === 'occ') {
-            subArea = codeOccAreas.find((area) => area.code === alarmMainAreaCode)?.subs.find((subArea) => subArea.code === alarmAreaCode);
-          } else if (alarmSiteType === 'train') {
-            subArea = codeTrainAreas.find((area) => area.code === alarmMainAreaCode)?.subs.find((subArea) => subArea.code === alarmAreaCode);
-          } else {
-            continue;
-          }
-          if (!subArea) continue; // 如果还是未找到2级区域，则跳过该警报器
+        // 查找2级区域，如果未找到则跳过该警报器
+        const subArea = compiledCodeAreaMaps.subAreaMap.get(alarmAreaCode);
+        if (!subArea) continue;
 
-          const subAreaNode: AlarmSubAreaNodeOption = {
-            key: `${alarmSiteCode}${alarmAreaCode}`,
+        // 尝试从索引中获取2级区域节点，若不存在则创建
+        const subAreaNodeKey = buildSubAreaNodeKey(siteCode, alarmAreaCode);
+        let subAreaNode = subAreaNodeMap.get(subAreaNodeKey);
+        if (!subAreaNode) {
+          subAreaNode = {
+            key: subAreaNodeKey,
             label: subArea.name,
             children: [],
             stats: { online: 0, offline: 0, total: 0 },
             site: site,
+            areaLevel: 2,
           };
-          targetMainAreaNode.children?.push(subAreaNode);
+          subAreaNodeMap.set(subAreaNodeKey, subAreaNode);
+          mainAreaNode.children?.push(subAreaNode);
         }
-        const subAreaNode = targetMainAreaNode.children?.find((subAreaNode) => subAreaNode.key === `${alarmSiteCode}${alarmAreaCode}`);
-        if (!subAreaNode) continue; // 如果2级区域节点不存在，则跳过该警报器
 
         // 构造警报器节点
+        let alarmGbCodeSet = subAreaNodeKeyToAlarmGbCodeSetMap.get(subAreaNodeKey);
+        if (!alarmGbCodeSet) {
+          alarmGbCodeSet = new Set<string>();
+          subAreaNodeKeyToAlarmGbCodeSetMap.set(subAreaNodeKey, alarmGbCodeSet);
+        }
+        if (alarmGbCodeSet.has(alarmGbCode)) continue;
+        alarmGbCodeSet.add(alarmGbCode);
         const alarmType = alarm.code.substring(11, 14);
         const alarmNode: AlarmNodeOption = {
           key: alarmGbCode,
@@ -129,49 +133,25 @@ export const useAlarmStore = defineStore('vimp-alarm-store', () => {
           type: alarmType,
           alarm: alarm,
           site: site,
-          prefix: () => {
-            return h(NIcon, () => h(SirenIcon));
-          },
         };
-
-        // 添加警报器节点到子区域节点
-        if (!subAreaNode.children?.find((alarmNode) => alarmNode.key === alarmGbCode)) {
-          subAreaNode.children?.push(alarmNode);
-        }
+        subAreaNode.children?.push(alarmNode);
 
         // 统计站点、区域、子区域的在线/离线/总警报器数量
         siteNode.stats.total++;
-        targetMainAreaNode.stats.total++;
+        mainAreaNode.stats.total++;
         subAreaNode.stats.total++;
         if (alarm.status === 1) {
           siteNode.stats.online++;
-          targetMainAreaNode.stats.online++;
+          mainAreaNode.stats.online++;
           subAreaNode.stats.online++;
-        }
-        if (alarm.status === 0) {
+        } else if (alarm.status === 0) {
           siteNode.stats.offline++;
-          targetMainAreaNode.stats.offline++;
+          mainAreaNode.stats.offline++;
           subAreaNode.stats.offline++;
         }
       }
-      siteNode.suffix = () => {
-        const { online, offline, total } = siteNode.stats;
-        return `(${online}/${offline}/${total})`;
-      };
-      siteNode.children?.forEach((areaNode) => {
-        areaNode.suffix = () => {
-          const { online, offline, total } = areaNode.stats;
-          return h('div', { style: { marginRight: '8px', opacity: 0.6 } }, `(${online}/${offline}/${total})`);
-        };
-        areaNode.children?.forEach((subAreaNode) => {
-          subAreaNode.suffix = () => {
-            const { online, offline, total } = subAreaNode.stats;
-            return h('div', { style: { marginRight: '16px', opacity: 0.4 } }, `(${online}/${offline}/${total})`);
-          };
-        });
-      });
     }
-    lineTabPanes.value = _lineTabPanes;
+    lineTabPanes.value = result;
   };
 
   return {
diff --git a/src/pages/vimp/types/device-tree.ts b/src/pages/vimp/types/device-tree.ts
index 2984d26..87824a5 100644
--- a/src/pages/vimp/types/device-tree.ts
+++ b/src/pages/vimp/types/device-tree.ts
@@ -111,12 +111,14 @@ export interface AlarmSubAreaNodeOption extends TreeOption {
   children?: AlarmNodeOption[];
   stats: CountStats;
   site: VimpStation;
+  areaLevel: 2;
 }
 
 export interface AlarmMainAreaNodeOption extends TreeOption {
   children?: AlarmSubAreaNodeOption[];
   stats: CountStats;
   site: VimpStation;
+  areaLevel: 1;
 }
 
 export interface AlarmSiteNodeOption extends TreeOption {