diff --git a/apps/web/src/api/tts/types.ts b/apps/web/src/api/tts/types.ts
index ab4dda8b8..9bfec5498 100644
--- a/apps/web/src/api/tts/types.ts
+++ b/apps/web/src/api/tts/types.ts
@@ -105,7 +105,7 @@ export interface TTSPreviewRequest {
   speed?: number
   pitch?: number
   language?: string
-  emotion?: string // 情绪参数：natural/excited/calm/friendly
+  emotion?: string // 情绪参数：neutral/happy/sad/angry/surprised/fearful/disgusted（后端 normalize_emotion() 兼容旧 natural/excited/calm/friendly 与中文标签）
 }
 
 /** TTS 试听响应 */
diff --git a/apps/web/src/pages/ai-avatar/api/aiAvatar.ts b/apps/web/src/pages/ai-avatar/api/aiAvatar.ts
index ae3a4159d..152c7a193 100644
--- a/apps/web/src/pages/ai-avatar/api/aiAvatar.ts
+++ b/apps/web/src/pages/ai-avatar/api/aiAvatar.ts
@@ -55,7 +55,7 @@ export const createLipsyncJob = async (data: {
   script_text?: string
   /** 语速 0.5~2.0，默认 1.0（TTS 直生模式用） */
   speed?: number
-  /** 情绪英文枚举：natural/excited/calm/friendly（TTS 直生模式用） */
+  /** 情绪英文枚举：neutral/happy/sad/angry/surprised/fearful/disgusted（TTS 直生模式用；前端经 normalizeEmotion 归一化） */
   emotion?: string
   enable_video_loop?: boolean
   project_id?: string
diff --git a/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx b/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx
index 6269e7663..58cd92f33 100644
--- a/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx
+++ b/apps/web/src/pages/ai-avatar/components/PanelVoiceSelector.tsx
@@ -13,7 +13,8 @@ import {
   type VoiceEmotion,
   type VoiceLanguage,
   VOICE_EMOTION_OPTIONS,
-  VOICE_LANGUAGE_OPTIONS,
+  PRESET_VOICE_LANGUAGE_OPTIONS,
+  CLONE_VOICE_LANGUAGE_OPTIONS,
 } from "../types"
 
 interface PanelVoiceSelectorProps {
@@ -91,6 +92,12 @@ export function PanelVoiceSelector({
 
   const NO_PREVIEW_TIP = "该音色暂无试听音频，请先用此音色生成一段配音后再试听"
 
+  // 系统预置音色仅支持 zh/en；克隆音色支持全语言
+  const languageOptions =
+    voiceSource === "clone" ? CLONE_VOICE_LANGUAGE_OPTIONS : PRESET_VOICE_LANGUAGE_OPTIONS
+  // 当前语言不在可选列表（切回预置时 ja/ko/cantonese/mandarin 失效）→ 自动回退到中文
+  const effectiveLanguage = languageOptions.some((o) => o.value === language) ? language : "zh"
+
   /** 用指定 URL 真实播放（抽取公共） */
   const playAudioUrl = (voiceId: string, url: string) => {
     // 临时兼容：后端 /tts/preview 返回 HTTP URL，staging 是 HTTPS，Mixed Content 会阻止加载
@@ -289,10 +296,12 @@ export function PanelVoiceSelector({
             <select
               id="aa-voice-language"
               className="aa-select"
-              value={language}
-              onChange={(e) => onLanguageChange(e.target.value as VoiceLanguage)}
+              value={effectiveLanguage}
+              onChange={(e) => {
+                onLanguageChange(e.target.value as VoiceLanguage)
+              }}
             >
-              {VOICE_LANGUAGE_OPTIONS.map((opt) => (
+              {languageOptions.map((opt) => (
                 <option key={opt.value} value={opt.value}>
                   {opt.label}
                 </option>
diff --git a/apps/web/src/pages/ai-avatar/hooks/useAiAvatar.ts b/apps/web/src/pages/ai-avatar/hooks/useAiAvatar.ts
index 6300be24a..fb8f86660 100644
--- a/apps/web/src/pages/ai-avatar/hooks/useAiAvatar.ts
+++ b/apps/web/src/pages/ai-avatar/hooks/useAiAvatar.ts
@@ -34,9 +34,9 @@ export function useAiAvatar() {
   /* ── 面板2：配音库 ── */
   const [voiceSource, setVoiceSource] = useState<VoiceSource>("preset")
   const [selectedVoice, setSelectedVoice] = useState<UnifiedVoiceItem | null>(null)
-  const [emotion, setEmotion] = useState<VoiceEmotion>("natural")
+  const [emotion, setEmotion] = useState<VoiceEmotion>("neutral")
   const [speed, setSpeed] = useState(1.0)
-  const [language, setLanguage] = useState<VoiceLanguage>("mandarin")
+  const [language, setLanguage] = useState<VoiceLanguage>("zh")
 
   /* ── 面板3：文案 & 对口型 ── */
   const [script, setScript] = useState<Script | null>(null)
diff --git a/apps/web/src/pages/ai-avatar/types.ts b/apps/web/src/pages/ai-avatar/types.ts
index 16384007a..bed6e439e 100644
--- a/apps/web/src/pages/ai-avatar/types.ts
+++ b/apps/web/src/pages/ai-avatar/types.ts
@@ -6,25 +6,42 @@ import type { AssetItem } from "@/api/assets"
 /* ── 音色来源切换 ── */
 export type VoiceSource = "preset" | "clone"
 
-/* ── 情绪 ── */
-export type VoiceEmotion = "natural" | "excited" | "calm" | "friendly"
+/* ── 情绪（对齐 CosyVoice 7 种情绪） ── */
+export type VoiceEmotion =
+  "neutral" | "happy" | "sad" | "angry" | "surprised" | "fearful" | "disgusted"
 
 export const VOICE_EMOTION_OPTIONS: { value: VoiceEmotion; label: string }[] = [
-  { value: "natural", label: "自然" },
-  { value: "excited", label: "兴奋" },
-  { value: "calm", label: "沉稳" },
-  { value: "friendly", label: "亲切" },
+  { value: "neutral", label: "自然" },
+  { value: "happy", label: "开心" },
+  { value: "sad", label: "难过" },
+  { value: "angry", label: "生气" },
+  { value: "surprised", label: "惊讶" },
+  { value: "fearful", label: "恐惧" },
+  { value: "disgusted", label: "厌恶" },
 ]
 
 /* ── 语言 ── */
-export type VoiceLanguage = "mandarin" | "english" | "cantonese"
+/** 系统预置音色支持的语言（zh/en） */
+export type PresetVoiceLanguage = "zh" | "en"
+/** 克隆音色支持的完整语言列表 */
+export type CloneVoiceLanguage = "zh" | "en" | "ja" | "ko"
+export type VoiceLanguage = PresetVoiceLanguage | CloneVoiceLanguage
 
-export const VOICE_LANGUAGE_OPTIONS: { value: VoiceLanguage; label: string }[] = [
-  { value: "mandarin", label: "普通话" },
-  { value: "english", label: "English" },
-  { value: "cantonese", label: "粤语" },
+export const PRESET_VOICE_LANGUAGE_OPTIONS: { value: PresetVoiceLanguage; label: string }[] = [
+  { value: "zh", label: "中文" },
+  { value: "en", label: "English" },
 ]
 
+export const CLONE_VOICE_LANGUAGE_OPTIONS: { value: CloneVoiceLanguage; label: string }[] = [
+  { value: "zh", label: "中文" },
+  { value: "en", label: "English" },
+  { value: "ja", label: "日本語" },
+  { value: "ko", label: "한국어" },
+]
+
+/** 默认（预置音色）语言选项 */
+export const VOICE_LANGUAGE_OPTIONS = PRESET_VOICE_LANGUAGE_OPTIONS
+
 /* ── 对口型任务状态 ── */
 export type LipsyncStatus = "idle" | "pending" | "processing" | "completed" | "failed"
 
diff --git a/apps/web/src/pages/ai-avatar/utils/contract.ts b/apps/web/src/pages/ai-avatar/utils/contract.ts
index d8d361028..f660f07d6 100644
--- a/apps/web/src/pages/ai-avatar/utils/contract.ts
+++ b/apps/web/src/pages/ai-avatar/utils/contract.ts
@@ -6,21 +6,50 @@
  */
 import type { AiAvatarTitleConfig, AiAvatarCoverConfig, VoiceEmotion } from "../types"
 
-/* ── 情绪：中文 → 英文（防御性映射；state 默认已是英文） ── */
-const EMOTION_ZH_TO_EN: Record<string, VoiceEmotion> = {
-  自然: "natural",
-  兴奋: "excited",
-  沉稳: "calm",
-  亲切: "friendly",
+/* ── 情绪：中文/旧枚举 → CosyVoice 7 种英文枚举 ── */
+const EMOTION_ALIAS: Record<string, VoiceEmotion> = {
+  // 新英文枚举
+  neutral: "neutral",
+  happy: "happy",
+  sad: "sad",
+  angry: "angry",
+  surprised: "surprised",
+  fearful: "fearful",
+  disgusted: "disgusted",
+  // 旧英文枚举（4 种，向前兼容）
+  natural: "neutral",
+  excited: "happy",
+  calm: "neutral",
+  friendly: "happy",
+  // 中文
+  自然: "neutral",
+  开心: "happy",
+  难过: "sad",
+  生气: "angry",
+  惊讶: "surprised",
+  恐惧: "fearful",
+  厌恶: "disgusted",
+  // 旧中文
+  兴奋: "happy",
+  沉稳: "neutral",
+  亲切: "happy",
 }
-const VALID_EMOTIONS: VoiceEmotion[] = ["natural", "excited", "calm", "friendly"]
+const VALID_EMOTIONS: VoiceEmotion[] = [
+  "neutral",
+  "happy",
+  "sad",
+  "angry",
+  "surprised",
+  "fearful",
+  "disgusted",
+]
 
-/** 归一化为后端英文枚举 natural/excited/calm/friendly；非法/空值回退 natural。 */
+/** 归一化为后端英文枚举 neutral/happy/sad/angry/surprised/fearful/disgusted；非法/空值回退 neutral。 */
 export function normalizeEmotion(raw: string | undefined | null): VoiceEmotion {
-  if (!raw) return "natural"
+  if (!raw) return "neutral"
   const v = raw.trim()
   if ((VALID_EMOTIONS as string[]).includes(v)) return v as VoiceEmotion
-  return EMOTION_ZH_TO_EN[v] ?? "natural"
+  return EMOTION_ALIAS[v] ?? "neutral"
 }
 
 /* ── 标题：前端 state → 后端 build_title_drawtext_filter 字段（单个 title_config dict） ── */
diff --git a/apps/web/src/pages/voices/VoiceLibrary.tsx b/apps/web/src/pages/voices/VoiceLibrary.tsx
index 25fffc98e..8bf9c34e5 100755
--- a/apps/web/src/pages/voices/VoiceLibrary.tsx
+++ b/apps/web/src/pages/voices/VoiceLibrary.tsx
@@ -138,11 +138,11 @@ const VoiceLibrary: React.FC = () => {
     ttsAudioUrl,
     ttsError,
     setTtsText,
-    setTtsVoiceId,
     setTtsSpeed,
     setTtsEmotion,
     setTtsLanguage,
     setTtsOpen,
+    handleVoiceChange,
     handleTtsSynthesize,
     handleTtsSave,
     handleTtsClose,
@@ -378,7 +378,7 @@ const VoiceLibrary: React.FC = () => {
           .map((v) => ({ id: v.id, name: v.name }))}
         onTtsClose={handleTtsClose}
         onTtsTextChange={setTtsText}
-        onTtsVoiceChange={setTtsVoiceId}
+        onTtsVoiceChange={handleVoiceChange}
         onTtsSpeedChange={setTtsSpeed}
         onTtsEmotionChange={setTtsEmotion}
         onTtsLanguageChange={setTtsLanguage}
diff --git a/apps/web/src/pages/voices/components/TtsModal.tsx b/apps/web/src/pages/voices/components/TtsModal.tsx
index 29ff0202f..1f765f918 100755
--- a/apps/web/src/pages/voices/components/TtsModal.tsx
+++ b/apps/web/src/pages/voices/components/TtsModal.tsx
@@ -1,4 +1,4 @@
-import React from "react"
+import React, { useMemo } from "react"
 import { Modal } from "antd"
 import { type TtsModalProps, type TtsStatus } from "./tts-modal/types"
 import TextInputSection from "./tts-modal/TextInputSection"
@@ -9,6 +9,7 @@ import LanguageControl from "./tts-modal/LanguageControl"
 import SynthesizeButton from "./tts-modal/SynthesizeButton"
 import ErrorAlert from "./tts-modal/ErrorAlert"
 import ResultPanel from "./tts-modal/ResultPanel"
+import { PRESET_TTS_LANGUAGE_OPTIONS, CLONE_TTS_LANGUAGE_OPTIONS } from "./tts-modal/constants"
 
 /** AI 配音弹窗 */
 const TtsModal: React.FC<TtsModalProps> = ({
@@ -32,6 +33,13 @@ const TtsModal: React.FC<TtsModalProps> = ({
   onSynthesize,
   onSave,
 }) => {
+  // 预置音色（含空默认）仅支持 zh/en；克隆音色支持全语言列表
+  const isCloneVoice = useMemo(
+    () => !!ttsVoiceId && (clonedVoices ?? []).some((v) => v.id === ttsVoiceId),
+    [ttsVoiceId, clonedVoices],
+  )
+  const languageOptions = isCloneVoice ? CLONE_TTS_LANGUAGE_OPTIONS : PRESET_TTS_LANGUAGE_OPTIONS
+
   return (
     <Modal title="AI 配音" open={open} onCancel={onClose} footer={null} width={560}>
       <div
@@ -57,7 +65,11 @@ const TtsModal: React.FC<TtsModalProps> = ({
           }}
         >
           <EmotionControl emotion={ttsEmotion} onChange={onEmotionChange} />
-          <LanguageControl language={ttsLanguage} onChange={onLanguageChange} />
+          <LanguageControl
+            language={ttsLanguage}
+            onChange={onLanguageChange}
+            options={languageOptions}
+          />
         </div>
         <SpeedControl speed={ttsSpeed} onChange={onSpeedChange} />
         <SynthesizeButton status={ttsStatus} text={ttsText} onClick={onSynthesize} />
diff --git a/apps/web/src/pages/voices/components/tts-modal/LanguageControl.tsx b/apps/web/src/pages/voices/components/tts-modal/LanguageControl.tsx
index a84668b83..72539762f 100644
--- a/apps/web/src/pages/voices/components/tts-modal/LanguageControl.tsx
+++ b/apps/web/src/pages/voices/components/tts-modal/LanguageControl.tsx
@@ -1,13 +1,28 @@
 import React from "react"
-import { TTS_LANGUAGE_OPTIONS, type TtsLanguage } from "./constants"
+import type { TtsLanguage } from "./constants"
+import { TTS_LANGUAGE_OPTIONS } from "./constants"
+
+interface LanguageOption {
+  value: string
+  label: string
+}
 
 interface LanguageControlProps {
   language: TtsLanguage
   onChange: (language: TtsLanguage) => void
+  /** 根据音色来源传入可选语言列表；不传则使用完整列表 */
+  options?: readonly LanguageOption[]
 }
 
 /** 语言选择下拉 */
-const LanguageControl: React.FC<LanguageControlProps> = ({ language, onChange }) => {
+const LanguageControl: React.FC<LanguageControlProps> = ({
+  language,
+  onChange,
+  options = TTS_LANGUAGE_OPTIONS,
+}) => {
+  // 若当前语言不在可选列表（如从克隆切到预置时 ja/ko 失效），自动回退到中文
+  const effectiveValue = options.some((o) => o.value === language) ? language : "zh-CN"
+
   return (
     <div>
       <div
@@ -20,7 +35,7 @@ const LanguageControl: React.FC<LanguageControlProps> = ({ language, onChange })
         语言
       </div>
       <select
-        value={language}
+        value={effectiveValue}
         onChange={(e) => onChange(e.target.value as TtsLanguage)}
         style={{
           width: "100%",
@@ -34,7 +49,7 @@ const LanguageControl: React.FC<LanguageControlProps> = ({ language, onChange })
           cursor: "pointer",
         }}
       >
-        {TTS_LANGUAGE_OPTIONS.map((opt) => (
+        {options.map((opt) => (
           <option key={opt.value} value={opt.value}>
             {opt.label}
           </option>
diff --git a/apps/web/src/pages/voices/components/tts-modal/constants.ts b/apps/web/src/pages/voices/components/tts-modal/constants.ts
index e57ff482b..be53024f7 100644
--- a/apps/web/src/pages/voices/components/tts-modal/constants.ts
+++ b/apps/web/src/pages/voices/components/tts-modal/constants.ts
@@ -1,22 +1,40 @@
-/** TTS 情绪选项（对齐后端 CosyVoice 支持：natural/excited/calm/friendly） */
+/**
+ * TTS 情绪选项（对齐后端 CosyVoice 支持：neutral/happy/sad/angry/surprised/fearful/disgusted）
+ * 后端 normalize_emotion() 会将 value 映射为内部英文枚举
+ */
 export const TTS_EMOTION_OPTIONS = [
-  { value: "natural", label: "自然" },
-  { value: "excited", label: "兴奋" },
-  { value: "calm", label: "沉稳" },
-  { value: "friendly", label: "亲切" },
+  { value: "neutral", label: "自然" },
+  { value: "happy", label: "开心" },
+  { value: "sad", label: "难过" },
+  { value: "angry", label: "生气" },
+  { value: "surprised", label: "惊讶" },
+  { value: "fearful", label: "恐惧" },
+  { value: "disgusted", label: "厌恶" },
 ] as const
 
 export type TtsEmotion = (typeof TTS_EMOTION_OPTIONS)[number]["value"]
 
-/** TTS 语言选项 */
-export const TTS_LANGUAGE_OPTIONS = [
+/**
+ * TTS 语言选项
+ * - 系统预置音色：仅支持 zh/en（多语言需使用克隆音色）
+ * - 克隆音色：完整语言列表
+ */
+export const PRESET_TTS_LANGUAGE_OPTIONS = [
+  { value: "zh-CN", label: "中文" },
+  { value: "en", label: "英文" },
+] as const
+
+export const CLONE_TTS_LANGUAGE_OPTIONS = [
   { value: "zh-CN", label: "中文" },
   { value: "en", label: "英文" },
   { value: "ja", label: "日文" },
   { value: "ko", label: "韩文" },
 ] as const
 
-export type TtsLanguage = (typeof TTS_LANGUAGE_OPTIONS)[number]["value"]
+export const TTS_LANGUAGE_OPTIONS = CLONE_TTS_LANGUAGE_OPTIONS
 
-export const DEFAULT_TTS_EMOTION: TtsEmotion = "natural"
+export type TtsLanguage = (typeof TTS_LANGUAGE_OPTIONS)[number]["value"]
+export type PresetTtsLanguage = (typeof PRESET_TTS_LANGUAGE_OPTIONS)[number]["value"]
+
+export const DEFAULT_TTS_EMOTION: TtsEmotion = "neutral"
 export const DEFAULT_TTS_LANGUAGE: TtsLanguage = "zh-CN"
diff --git a/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts b/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts
index f5c2e841e..66c7bfc32 100644
--- a/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts
+++ b/apps/web/src/pages/voices/hooks/useTtsSynthesize.ts
@@ -7,12 +7,18 @@ 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（允许任意 TtsLanguage 做 Has 检查） */
+const PRESET_LANG_SET: ReadonlySet<TtsLanguage> = new Set<TtsLanguage>(
+  PRESET_TTS_LANGUAGE_OPTIONS.map((o) => o.value as TtsLanguage),
+)
+
 /**
  * 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 +49,29 @@ 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 +83,7 @@ export function useTtsSynthesize({
         voice_id: ttsVoiceId || undefined,
         speed: ttsSpeed,
         emotion: ttsEmotion,
-        language: ttsLanguage,
+        language: effectiveLang,
       })
       setTtsJobId(resp.job_id)
 
@@ -91,7 +114,7 @@ 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 +183,8 @@ export function useTtsSynthesize({
     setTtsEmotion,
     setTtsLanguage,
     setTtsOpen,
+    // 覆写 onVoiceChange（带语言回退）
+    handleVoiceChange,
     // Actions
     handleTtsSynthesize,
     handleTtsSave,