diff --git a/src/views/Speaking.vue b/src/views/Speaking.vue
index ad1fa24..11ac44c 100644
--- a/src/views/Speaking.vue
+++ b/src/views/Speaking.vue
@@ -1,5 +1,5 @@
 <script setup>
-import { ref, computed, nextTick, onUnmounted } from "vue";
+import { ref, computed, nextTick, onUnmounted, onMounted } from "vue";
 import { useRouter } from "vue-router";
 import { DOUBAO_APP_ID, DOUBAO_ACCESS_TOKEN, DOUBAO_RESOURCE_ID, DOUBAO_TTS_API_PATH, DOUBAO_AUDIO_FORMAT, DOUBAO_SAMPLE_RATE, ARK_API_KEY, ARK_MODEL, ARK_API_PATH, ARK_MAX_TOKENS, ARK_HISTORY_LIMIT } from "@/config/index.js";
 
@@ -109,6 +109,7 @@ const messagesContainer = ref(null);
 let msgIdCounter = 0;
 let currentAudioInstance = null;
 const blobUrls = [];
+let lastGreetedScene = null;
 
 // 兼容的 UUID 生成函数
 const generateUUID = () => {
@@ -121,6 +122,15 @@ const generateUUID = () => {
 
 const currentScene = computed(() => scenes.find((s) => s.id === activeScene.value));
 
+// 初始化：发送默认场景欢迎语
+onMounted(() => {
+  const defaultScene = scenes.find((s) => s.id === activeScene.value);
+  if (defaultScene) {
+    sendGreeting(defaultScene);
+    lastGreetedScene = activeScene.value;
+  }
+});
+
 // 发送场景欢迎语
 const sendGreeting = async (scene) => {
   isSending.value = true;
@@ -144,7 +154,8 @@ const sendGreeting = async (scene) => {
 
 // 切换场景，重置对话并发送欢迎语
 const switchScene = (sceneId) => {
-  if (activeScene.value === sceneId) return;
+  // 如果是上一个已发送欢迎语的场景，不重复发送
+  if (activeScene.value === sceneId && lastGreetedScene === sceneId) return;
   activeScene.value = sceneId;
   // 停止当前播放
   if (currentAudioInstance) {
@@ -153,7 +164,10 @@ const switchScene = (sceneId) => {
   }
   messages.value = [];
   const scene = scenes.find((s) => s.id === sceneId);
-  if (scene) sendGreeting(scene);
+  if (scene) {
+    sendGreeting(scene);
+    lastGreetedScene = sceneId;
+  }
 };
 
 // 滚动到底部