diff --git a/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts b/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts
index f5c2e841e..a8ff11ec4 100644
--- a/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts
+++ b/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts
@@ -7,12 +7,16 @@ import type { TtsClonedVoiceOption } from "../components/tts-modal/VoiceSelector
 import {
   DEFAULT_TTS_EMOTION,
   DEFAULT_TTS_LANGUAGE,
+  PRESET_TTS_LANGUAGE_OPTIONS,
   type TtsEmotion,
   type TtsLanguage,
 } from "../components/tts-modal/constants"
 
 export type TtsStatus = "idle" | "synthesizing" | "done" | "error"
 
+/** 预置音色支持的语言 value 集合 */
+const PRESET_LANG_SET = new Set(PRESET_TTS_LANGUAGE_OPTIONS.map((o) => o.value))
+
 /**
  * TTS 合成 Hook
  * 封装 AI 配音弹窗状态、合成请求、轮询、保存到素材库等逻辑
@@ -43,12 +47,29 @@ export function useTtsSynthesize({
   const [ttsError, setTtsError] = useState<string | null>(null)
   const ttsTimerRef = useRef<ReturnType<typeof setInterval> | null>(null)
 
+  /** 切换音色时：预置音色下自动回退到受支持语言（zh-CN/en） */
+  const handleVoiceChange = useCallback(
+    (voiceId: string) => {
+      setTtsVoiceId(voiceId)
+      const isClone = !!voiceId && clonedVoices.some((v) => v.id === voiceId)
+      if (!isClone && !PRESET_LANG_SET.has(ttsLanguage)) {
+        setTtsLanguage(DEFAULT_TTS_LANGUAGE)
+      }
+    },
+    [clonedVoices, ttsLanguage],
+  )
+
   /** 开始 AI 配音合成 */
   const handleTtsSynthesize = useCallback(async () => {
     if (!ttsText.trim()) {
       message.warning("请输入要合成的文本")
       return
     }
+    // 防御：合成前再次校验预置音色语言
+    const isClone = !!ttsVoiceId && clonedVoices.some((v) => v.id === ttsVoiceId)
+    const effectiveLang =
+      !isClone && !PRESET_LANG_SET.has(ttsLanguage) ? DEFAULT_TTS_LANGUAGE : ttsLanguage
+
     setTtsError(null)
     setTtsStatus("synthesizing")
     setTtsAudioUrl(null)
@@ -60,7 +81,7 @@ export function useTtsSynthesize({
         voice_id: ttsVoiceId || undefined,
         speed: ttsSpeed,
         emotion: ttsEmotion,
-        language: ttsLanguage,
+        language: effectiveLang,
       })
       setTtsJobId(resp.job_id)
 
@@ -91,7 +112,7 @@ export function useTtsSynthesize({
       setTtsStatus("error")
       setTtsError(msg)
     }
-  }, [ttsText, ttsVoiceId, ttsSpeed, ttsEmotion, ttsLanguage])
+  }, [ttsText, ttsVoiceId, ttsSpeed, ttsEmotion, ttsLanguage, clonedVoices])
 
   /** 保存 TTS 结果到素材库 */
   const handleTtsSave = useCallback(async () => {
@@ -160,6 +181,8 @@ export function useTtsSynthesize({
     setTtsEmotion,
     setTtsLanguage,
     setTtsOpen,
+    // 覆写 onVoiceChange（带语言回退）
+    handleVoiceChange,
     // Actions
     handleTtsSynthesize,
     handleTtsSave,