diff --git a/backend/app/api/v1/translate.py b/backend/app/api/v1/translate.py
index 774459b..79a33f7 100644
--- a/backend/app/api/v1/translate.py
+++ b/backend/app/api/v1/translate.py
@@ -111,9 +111,7 @@ async def text_to_speech_get(
     if not audio:
         raise HTTPException(status_code=501, detail="TTS not available")
 
-    return Response(content=audio, media_type="audio/mpeg", headers={
-        "Content-Disposition": f'attachment; filename="tts-{lang}.mp3"',
-    })
+    return Response(content=audio, media_type="audio/mpeg")
 
 
 @router.post("/feedback")
diff --git a/backend/app/services/tts.py b/backend/app/services/tts.py
index 2309075..2ca7381 100644
--- a/backend/app/services/tts.py
+++ b/backend/app/services/tts.py
@@ -28,7 +28,7 @@ SUPPORTED_LANGS = list(VOICE_MAP.keys())
 
 class TextToSpeechService:
     @staticmethod
-    async def synthesize(text: str, lang: str = "en", rate: str = "0%", pitch: str = "0Hz") -> Optional[bytes]:
+    async def synthesize(text: str, lang: str = "en", rate: str = "", pitch: str = "") -> Optional[bytes]:
         if not HAS_EDGE_TTS:
             logger.warning("edge-tts not available")
             return None
@@ -36,7 +36,10 @@ class TextToSpeechService:
         voice = VOICE_MAP.get(lang, VOICE_MAP["en"])
 
         try:
-            communicate = edge_tts.Communicate(text, voice, rate=rate, pitch=pitch)
+            kwargs = {"voice": voice, "rate": rate} if rate else {"voice": voice}
+            if pitch:
+                kwargs["pitch"] = pitch
+            communicate = edge_tts.Communicate(text, **kwargs)
             audio_data = b""
             async for chunk in communicate.stream():
                 if chunk["type"] == "audio":
diff --git a/uni-app/src/pages/translate/translate.vue b/uni-app/src/pages/translate/translate.vue
index 7f241dc..be8d643 100644
--- a/uni-app/src/pages/translate/translate.vue
+++ b/uni-app/src/pages/translate/translate.vue
@@ -187,29 +187,59 @@ const copyResult = () => {
 const playTts = () => {
   if (!result.value) return
   const lang = targetLangs[targetIndex.value].code
-  const token = uni.getStorageSync('token')
-  const url = `${BASE_URL}/translate/tts?text=${encodeURIComponent(result.value)}&lang=${lang}`
+  const text = result.value
 
   uni.showLoading({ title: '语音生成中...' })
-  uni.downloadFile({
-    url,
-    header: { Authorization: `Bearer ${token}` },
-    success: (res) => {
-      uni.hideLoading()
-      if (res.statusCode === 200) {
-        const audioCtx = uni.createInnerAudioContext()
-        audioCtx.src = res.tempFilePath
-        audioCtx.play()
-        audioCtx.onEnded(() => audioCtx.destroy())
-      } else {
+
+  if (typeof window !== 'undefined' && window.Audio) {
+    const token = uni.getStorageSync('token')
+    uni.request({
+      url: `${BASE_URL}/translate/tts?text=${encodeURIComponent(text)}&lang=${lang}`,
+      method: 'GET',
+      header: { Authorization: `Bearer ${token}` },
+      responseType: 'arraybuffer',
+      success: (res) => {
+        uni.hideLoading()
+        if (res.statusCode === 200 && res.data) {
+          const blob = new Blob([res.data], { type: 'audio/mpeg' })
+          const url = URL.createObjectURL(blob)
+          const audio = new Audio(url)
+          audio.onended = () => { URL.revokeObjectURL(url) }
+          audio.play().catch(() => {
+            uni.showToast({ title: '播放失败，请检查音量', icon: 'none' })
+          })
+        } else {
+          uni.showToast({ title: '语音生成失败', icon: 'none' })
+        }
+      },
+      fail: () => {
+        uni.hideLoading()
         uni.showToast({ title: '语音生成失败', icon: 'none' })
-      }
-    },
-    fail: () => {
-      uni.hideLoading()
-      uni.showToast({ title: '语音生成失败', icon: 'none' })
-    },
-  })
+      },
+    })
+  } else {
+    const token = uni.getStorageSync('token')
+    const url = `${BASE_URL}/translate/tts?text=${encodeURIComponent(text)}&lang=${lang}`
+    uni.downloadFile({
+      url,
+      header: { Authorization: `Bearer ${token}` },
+      success: (res) => {
+        uni.hideLoading()
+        if (res.statusCode === 200) {
+          const audioCtx = uni.createInnerAudioContext()
+          audioCtx.src = res.tempFilePath
+          audioCtx.play()
+          audioCtx.onEnded(() => audioCtx.destroy())
+        } else {
+          uni.showToast({ title: '语音生成失败', icon: 'none' })
+        }
+      },
+      fail: () => {
+        uni.hideLoading()
+        uni.showToast({ title: '语音生成失败', icon: 'none' })
+      },
+    })
+  }
 }
 
 const handleExtract = async () => {