diff --git a/src/renderer/views/chat/ChatView.vue b/src/renderer/views/chat/ChatView.vue
index bcd27a4..522bbce 100644
--- a/src/renderer/views/chat/ChatView.vue
+++ b/src/renderer/views/chat/ChatView.vue
@@ -43,7 +43,7 @@
 </template>
 
 <script setup>
-import { ref, computed, onUnmounted, nextTick, watch } from 'vue';
+import { ref, computed, onMounted, onUnmounted, nextTick, watch } from 'vue';
 import { useRoute } from 'vue-router';
 import { ElMessage } from 'element-plus';
 import { ChatDotRound, ArrowRight, ArrowDown } from '@element-plus/icons-vue';
@@ -136,6 +136,10 @@ watch(
     if (newSessionId) {
       currentSessionId.value = newSessionId;
       loadHistoryMessages(newSessionId);
+      // 确保 SSE 连接已建立（如果之前断开）
+      if (!eventSource) {
+        connectSSE();
+      }
     }
   },
   { immediate: true }
@@ -160,7 +164,11 @@ function upsertAssistantBubble(msgId, text) {
 }
 
 function connectSSE() {
-  if (eventSource) eventSource.close();
+  if (eventSource) {
+    eventSource.close();
+    eventSource = null;
+  }
+  console.log('[connectSSE] 建立 SSE 连接...');
   eventSource = createEventSource();
 
   eventSource.onmessage = (e) => {
@@ -231,6 +239,11 @@ async function send() {
   }
 }
 
+onMounted(() => {
+  // 组件挂载时建立 SSE 连接
+  connectSSE();
+});
+
 onUnmounted(() => {
   if (eventSource) eventSource.close();
 });