diff --git a/app/src/renderer/src/stores/mqtt.js b/app/src/renderer/src/stores/mqtt.js
index 59bfd2e..1fe391c 100644
--- a/app/src/renderer/src/stores/mqtt.js
+++ b/app/src/renderer/src/stores/mqtt.js
@@ -108,6 +108,17 @@ const loading = ref(false);
  */
 let cleanupFns = [];
 
+/**
+ * 对指定服务器的主题列表按主题名称升序排序
+ * @param {MqttServer} server - 服务器对象
+ * @returns {void}
+ */
+function sortTopics(server) {
+  if (server && server.topics) {
+    server.topics.sort((a, b) => a.topic.localeCompare(b.topic));
+  }
+}
+
 /**
  * 设置主进程事件监听器
  * 包括状态变化、消息接收、订阅变化等事件
@@ -172,6 +183,7 @@ function setupListeners() {
             t.subscribed = data.subscribed;
             if (data.topic && data.topic !== t.topic) {
               t.topic = data.topic;
+              sortTopics(srv);
             }
           }
 
@@ -252,6 +264,7 @@ export function useMqttStore() {
 
       servers.value = data;
       sortServers();
+      servers.value.forEach((srv) => sortTopics(srv));
       setupListeners();
 
     } catch (e) {
@@ -355,6 +368,7 @@ export function useMqttStore() {
     let data = await window.api.importServers(serverList);
     servers.value = data;
     sortServers();
+    servers.value.forEach((srv) => sortTopics(srv));
     if (servers.value.length > 0 && !activeServerId.value) {
       activeServerId.value = servers.value[0].id;
     }
@@ -396,6 +410,7 @@ export function useMqttStore() {
       let srv = servers.value.find((s) => s.id === serverId);
       if (srv) {
         srv.topics.push(result);
+        sortTopics(srv);
       }
     }
 
@@ -417,6 +432,7 @@ export function useMqttStore() {
 
     if (srv) {
       srv.topics = srv.topics.filter((t) => t.topic !== topic);
+      sortTopics(srv);
     }
 
   }