diff --git a/apps/web/src/api/voiceClone.ts b/apps/web/src/api/voiceClone.ts
index 11e6d9633..9e5ea7f0d 100644
--- a/apps/web/src/api/voiceClone.ts
+++ b/apps/web/src/api/voiceClone.ts
@@ -1,12 +1,15 @@
 /**
  * 音色克隆 API
- * Sprint 4 — mock 数据，后续迁移真实 API
+ * 任务 3.11：替换 Mock 数据，对接后端真实 API（3.05）
  */
+import apiClient from "./client";
 
-/** 克隆音色状态 */
+/* ── 前端兼容类型 ─────────────────────────────────────── */
+
+/** 克隆音色状态（前端展示用） */
 export type VoiceCloneStatus = "ready" | "processing" | "failed";
 
-/** 克隆音色条目 */
+/** 克隆音色条目（前端展示用） */
 export interface VoiceClone {
   id: string;
   name: string;
@@ -17,55 +20,76 @@ export interface VoiceClone {
   updated_at: string;
 }
 
-/** 创建克隆请求 */
+/** 创建克隆请求（前端简化版） */
 export interface CreateVoiceCloneRequest {
   name: string;
   audio_url: string;
 }
 
-/* ── Mock 数据 ─────────────────────────────────────────── */
+/* ── 后端 API 类型 ────────────────────────────────────── */
 
-const MOCK_CLONES: VoiceClone[] = [
-  {
-    id: "vc-001",
-    name: "我的播音腔",
-    duration_seconds: 128,
-    status: "ready",
-    sample_url: "",
-    created_at: "2026-06-20T10:30:00Z",
-    updated_at: "2026-06-20T10:35:00Z",
-  },
-  {
-    id: "vc-002",
-    name: "温柔女声",
-    duration_seconds: 256,
-    status: "ready",
-    sample_url: "",
-    created_at: "2026-06-22T14:00:00Z",
-    updated_at: "2026-06-22T14:08:00Z",
-  },
-  {
-    id: "vc-003",
-    name: "磁性男声",
-    duration_seconds: 95,
-    status: "processing",
-    created_at: "2026-06-28T09:15:00Z",
-    updated_at: "2026-06-28T09:15:00Z",
-  },
-  {
-    id: "vc-004",
-    name: "童声模仿",
-    duration_seconds: 60,
-    status: "ready",
-    sample_url: "",
-    created_at: "2026-06-25T16:45:00Z",
-    updated_at: "2026-06-25T16:50:00Z",
-  },
-];
+/** 后端克隆档案响应 */
+export interface VoiceCloneProfile {
+  id: string;
+  user_id: string;
+  name: string;
+  description: string;
+  source_audio_url: string;
+  voice_id: string | null;
+  voice_model: string;
+  language: string;
+  gender: string;
+  status: "pending" | "processing" | "ready" | "failed";
+  error_message: string | null;
+  retry_count: number;
+  max_retries: number;
+  metadata_: Record<string, unknown> | null;
+  created_at: string;
+  updated_at: string;
+}
+
+/** 后端克隆列表响应 */
+export interface ListVoiceCloneResponse {
+  items: VoiceCloneProfile[];
+  total: number;
+}
+
+/** 后端克隆状态响应 */
+export interface VoiceCloneStatusResponse {
+  id: string;
+  status: "pending" | "processing" | "ready" | "failed";
+  error_message: string | null;
+  voice_id: string | null;
+  retry_count: number;
+}
+
+/** 后端创建克隆请求（完整版） */
+export interface CreateVoiceCloneRequestFull {
+  name: string;
+  description?: string;
+  source_audio_url: string;
+  voice_model?: string;
+  language?: string;
+  gender?: string;
+  max_retries?: number;
+  metadata_?: Record<string, unknown>;
+}
 
 /* ── 辅助函数 ─────────────────────────────────────────── */
 
-const delay = (ms: number) => new Promise((r) => setTimeout(r, ms));
+/**
+ * 将后端 VoiceCloneProfile 转换为前端 VoiceClone
+ * 后端 status "pending" 映射为前端 "processing"
+ */
+export const toVoiceClone = (profile: VoiceCloneProfile): VoiceClone => ({
+  id: profile.id,
+  name: profile.name,
+  duration_seconds: 0,
+  status: profile.status === "pending" ? "processing" : profile.status,
+  sample_url: profile.source_audio_url || undefined,
+  created_at: profile.created_at,
+  updated_at: profile.updated_at,
+});
 
 /** 格式化时长 */
 export const formatDuration = (seconds: number): string => {
@@ -74,54 +98,100 @@ export const formatDuration = (seconds: number): string => {
   return `${m}:${String(s).padStart(2, "0")}`;
 };
 
+/* ── 查询参数 ─────────────────────────────────────────── */
+
+export interface VoiceCloneListParams {
+  status?: string;
+  skip?: number;
+  limit?: number;
+}
+
 /* ── API 函数 ─────────────────────────────────────────── */
 
-/** 获取所有克隆音色 */
-export const getVoiceClones = async (): Promise<VoiceClone[]> => {
-  await delay(300);
-  return [...MOCK_CLONES];
+/** 获取克隆音色列表（返回前端兼容数组） */
+export const getVoiceClones = async (
+  params?: VoiceCloneListParams,
+): Promise<VoiceClone[]> => {
+  const searchParams = new URLSearchParams();
+  if (params?.status) searchParams.set("status", params.status);
+  if (params?.skip !== undefined) searchParams.set("skip", String(params.skip));
+  if (params?.limit !== undefined) searchParams.set("limit", String(params.limit));
+  const qs = searchParams.toString();
+  const response = await apiClient.get<ListVoiceCloneResponse>(
+    `/voice-clones${qs ? `?${qs}` : ""}`,
+  );
+  return response.data.items.map(toVoiceClone);
+};
+
+/** 获取克隆音色列表（返回完整响应含 total） */
+export const getVoiceClonesWithTotal = async (
+  params?: VoiceCloneListParams,
+): Promise<ListVoiceCloneResponse> => {
+  const searchParams = new URLSearchParams();
+  if (params?.status) searchParams.set("status", params.status);
+  if (params?.skip !== undefined) searchParams.set("skip", String(params.skip));
+  if (params?.limit !== undefined) searchParams.set("limit", String(params.limit));
+  const qs = searchParams.toString();
+  const response = await apiClient.get<ListVoiceCloneResponse>(
+    `/voice-clones${qs ? `?${qs}` : ""}`,
+  );
+  return response.data;
 };
 
 /** 获取单个克隆音色详情 */
 export const getVoiceCloneDetail = async (
   id: string,
-): Promise<VoiceClone | null> => {
-  await delay(200);
-  return MOCK_CLONES.find((v) => v.id === id) ?? null;
+): Promise<VoiceCloneProfile> => {
+  const response = await apiClient.get<VoiceCloneProfile>(`/voice-clones/${id}`);
+  return response.data;
 };
 
 /** 创建克隆音色 */
 export const createVoiceClone = async (
   data: CreateVoiceCloneRequest,
-): Promise<VoiceClone> => {
-  await delay(500);
-  const newClone: VoiceClone = {
-    id: `vc-${Date.now()}`,
+): Promise<VoiceCloneProfile> => {
+  const payload: CreateVoiceCloneRequestFull = {
     name: data.name,
-    duration_seconds: 0,
-    status: "processing",
-    created_at: new Date().toISOString(),
-    updated_at: new Date().toISOString(),
+    source_audio_url: data.audio_url,
   };
-  MOCK_CLONES.unshift(newClone);
-  return newClone;
+  const response = await apiClient.post<VoiceCloneProfile>(
+    "/voice-clones",
+    payload,
+  );
+  return response.data;
 };
 
 /** 删除克隆音色 */
 export const deleteVoiceClone = async (id: string): Promise<void> => {
-  await delay(300);
-  const idx = MOCK_CLONES.findIndex((v) => v.id === id);
-  if (idx >= 0) MOCK_CLONES.splice(idx, 1);
+  await apiClient.delete(`/voice-clones/${id}`);
 };
 
-/** 更新克隆音色名称 */
+/** 更新克隆音色名称（stub — 后端暂无 PATCH 端点） */
 export const updateVoiceClone = async (
   id: string,
   data: Partial<Pick<VoiceClone, "name">>,
 ): Promise<VoiceClone> => {
-  await delay(300);
-  const clone = MOCK_CLONES.find((v) => v.id === id);
-  if (!clone) throw new Error("音色不存在");
-  Object.assign(clone, data, { updated_at: new Date().toISOString() });
-  return { ...clone };
+  // 后端暂未提供更新端点，暂用详情接口模拟
+  const response = await apiClient.get<VoiceCloneProfile>(`/voice-clones/${id}`);
+  return toVoiceClone({ ...response.data, ...data, updated_at: new Date().toISOString() });
+};
+
+/** 获取克隆状态 */
+export const getVoiceCloneStatus = async (
+  id: string,
+): Promise<VoiceCloneStatusResponse> => {
+  const response = await apiClient.get<VoiceCloneStatusResponse>(
+    `/voice-clones/${id}/status`,
+  );
+  return response.data;
+};
+
+/** 重试克隆 */
+export const retryVoiceClone = async (
+  id: string,
+): Promise<VoiceCloneProfile> => {
+  const response = await apiClient.post<VoiceCloneProfile>(
+    `/voice-clones/${id}/retry`,
+  );
+  return response.data;
 };
diff --git a/apps/web/src/api/voices.ts b/apps/web/src/api/voices.ts
index a0fd1b1f1..1c3aa2095 100644
--- a/apps/web/src/api/voices.ts
+++ b/apps/web/src/api/voices.ts
@@ -1,10 +1,94 @@
 /**
  * 配音相关 API
  * Phase 1 新增：全局配音库
+ *
+ * 任务 3.11：新增统一音色 API（对接后端 3.04），保留旧接口向后兼容
  */
 import apiClient from "./client";
 
-/** 配音条目 */
+/* ── 统一音色 API（后端 3.04） ─────────────────────────── */
+
+/** 统一音色条目（preset + clone 混合） */
+export interface UnifiedVoiceItem {
+  id: string;
+  type: "preset" | "clone";
+  name: string;
+  description: string;
+  gender: string;
+  language: string;
+  voice_id: string;
+  voice_provider: string;
+  audio_url: string | null;
+  preview_url: string | null;
+  duration: number | null;
+  file_size: number | null;
+  status: string;
+  tags: string[];
+  user_id: string | null;
+  project_id: string | null;
+  voice_clone_profile_id: string | null;
+  created_at: string | null;
+  updated_at: string | null;
+}
+
+/** 统一音色列表响应 */
+export interface UnifiedVoiceListResponse {
+  items: UnifiedVoiceItem[];
+  total: number;
+  preset_count: number;
+  clone_count: number;
+}
+
+/** 预设音色条目 */
+export interface PresetVoiceItem {
+  voice_id: string;
+  name: string;
+  description: string;
+  gender: string;
+  language: string;
+  preview_url: string | null;
+  tags: string[];
+}
+
+/** 预设音色列表响应 */
+export interface PresetVoiceListResponse {
+  items: PresetVoiceItem[];
+  total: number;
+}
+
+/** 统一列表查询参数 */
+export interface UnifiedVoiceListParams {
+  type?: "preset" | "clone";
+  status?: string;
+  skip?: number;
+  limit?: number;
+}
+
+/** 获取统一音色列表（推荐） */
+export const fetchVoices = async (
+  params?: UnifiedVoiceListParams,
+): Promise<UnifiedVoiceListResponse> => {
+  const searchParams = new URLSearchParams();
+  if (params?.type) searchParams.set("type", params.type);
+  if (params?.status) searchParams.set("status", params.status);
+  if (params?.skip !== undefined) searchParams.set("skip", String(params.skip));
+  if (params?.limit !== undefined) searchParams.set("limit", String(params.limit));
+  const qs = searchParams.toString();
+  const response = await apiClient.get<UnifiedVoiceListResponse>(
+    `/voices${qs ? `?${qs}` : ""}`,
+  );
+  return response.data;
+};
+
+/** 获取预设音色列表（无需鉴权） */
+export const fetchPresetVoices = async (): Promise<PresetVoiceListResponse> => {
+  const response = await apiClient.get<PresetVoiceListResponse>("/voices/presets");
+  return response.data;
+};
+
+/* ── 向后兼容（旧接口） ────────────────────────────────── */
+
+/** 配音条目（旧） */
 export interface VoiceItem {
   id: string;
   name: string;
@@ -19,16 +103,16 @@ export interface VoiceItem {
   updated_at?: string;
 }
 
-/** 创建配音请求 */
+/** 创建配音请求（旧） */
 export interface CreateVoiceRequest {
   name: string;
   text: string;
   voice_type?: string;
 }
 
-/** 获取当前用户的所有配音 */
+/** 获取当前用户的所有配音（旧 → /voices/legacy） */
 export const getVoices = async (): Promise<VoiceItem[]> => {
-  const response = await apiClient.get("/voices");
+  const response = await apiClient.get("/voices/legacy");
   return response.data.items || response.data || [];
 };
 
@@ -45,7 +129,7 @@ export const updateVoice = async (
   voiceId: string,
   data: Partial<CreateVoiceRequest>,
 ): Promise<VoiceItem> => {
-  const response = await apiClient.patch(`/voices/${voiceId}`, data);
+  const response = await apiClient.put(`/voices/${voiceId}`, data);
   return response.data;
 };
 
diff --git a/apps/web/src/components/modals/CloneVoiceModal.tsx b/apps/web/src/components/modals/CloneVoiceModal.tsx
index 07c157b7c..9e9650d21 100644
--- a/apps/web/src/components/modals/CloneVoiceModal.tsx
+++ b/apps/web/src/components/modals/CloneVoiceModal.tsx
@@ -8,7 +8,7 @@
  */
 import React, { useState, useCallback, useRef } from "react";
 import { Modal, Button } from "@/components/ui";
-import { createVoiceClone } from "@/api/voiceClone";
+import { createVoiceClone, toVoiceClone } from "@/api/voiceClone";
 import type { VoiceClone } from "@/api/voiceClone";
 import "./clone-voice-modal.css";
 
@@ -133,7 +133,7 @@ const CloneVoiceModal: React.FC<CloneVoiceModalProps> = ({
 
       // 2秒后自动关闭
       setTimeout(() => {
-        onSuccess?.(result);
+        onSuccess?.(toVoiceClone(result));
         handleClose();
       }, 2000);
     } catch {
diff --git a/apps/web/src/components/modals/VoiceCloneModal.tsx b/apps/web/src/components/modals/VoiceCloneModal.tsx
index 0d8e4525d..12337b69b 100644
--- a/apps/web/src/components/modals/VoiceCloneModal.tsx
+++ b/apps/web/src/components/modals/VoiceCloneModal.tsx
@@ -10,7 +10,7 @@
  */
 import React, { useState, useCallback, useRef, useEffect } from "react";
 import { Modal, Button } from "@/components/ui";
-import { createVoiceClone } from "@/api/voiceClone";
+import { createVoiceClone, toVoiceClone } from "@/api/voiceClone";
 import type { VoiceClone } from "@/api/voiceClone";
 import "./voice-clone-modal.css";
 
@@ -198,7 +198,7 @@ const VoiceCloneModal: React.FC<VoiceCloneModalProps> = ({
 
       // 2秒后自动关闭
       setTimeout(() => {
-        onSuccess?.(result);
+        onSuccess?.(toVoiceClone(result));
         handleClose();
       }, 2000);
     } catch {
diff --git a/apps/web/src/pages/voice-clone/VoiceClone.tsx b/apps/web/src/pages/voice-clone/VoiceClone.tsx
index 3b5869e2f..c38a8c571 100644
--- a/apps/web/src/pages/voice-clone/VoiceClone.tsx
+++ b/apps/web/src/pages/voice-clone/VoiceClone.tsx
@@ -156,7 +156,7 @@ const VoiceClone: React.FC = () => {
   /** 查询克隆音色列表 */
   const { data: voices = [], isLoading } = useQuery({
     queryKey: ["voiceClones"],
-    queryFn: getVoiceClones,
+    queryFn: () => getVoiceClones(),
   });
 
   /** 删除 mutation */
diff --git a/apps/web/src/pages/voices/VoiceLibrary.tsx b/apps/web/src/pages/voices/VoiceLibrary.tsx
index 10f00e5fa..bc7871caf 100644
--- a/apps/web/src/pages/voices/VoiceLibrary.tsx
+++ b/apps/web/src/pages/voices/VoiceLibrary.tsx
@@ -1,11 +1,15 @@
 /**
- * 配音库页面 — V21 设计系统（任务 3.11 升级）
- * Tab 分类：「预置音色」+「我的克隆」
- * 网格卡片展示，支持播放/选中状态
- * Mock 数据 + 预留 CosyVoice API 对接接口
+ * 配音库页面 — V21 设计系统
+ *
+ * 任务 3.11：删除 Mock 数据，使用 useQuery 对接后端真实 API
+ *
+ * Tab 1：预置音色 — fetchPresetVoices()
+ * Tab 2：我的克隆 — getVoiceClonesWithTotal()
+ * 统计：fetchVoices({ limit: 1 }) 获取 preset_count / clone_count
  */
 import React, { useMemo, useState, useRef, useEffect, useCallback } from "react";
 import { useNavigate } from "react-router-dom";
+import { useQuery } from "@tanstack/react-query";
 import {
   SoundOutlined,
   PlayCircleOutlined,
@@ -20,6 +24,16 @@ import {
 } from "@ant-design/icons";
 import { Button, Input, Select } from "@/components/ui";
 import PageHead from "@/components/layout/PageHead";
+import {
+  fetchPresetVoices,
+  fetchVoices,
+  type PresetVoiceItem,
+} from "@/api/voices";
+import {
+  getVoiceClonesWithTotal,
+  toVoiceClone,
+  type VoiceClone,
+} from "@/api/voiceClone";
 import "./voices.css";
 
 /* ============================================================
@@ -29,7 +43,8 @@ type VoiceGender = "male" | "female" | "child" | "elderly";
 type VoiceLanguage = "zh" | "en" | "ja" | "ko";
 type TabKey = "preset" | "cloned";
 
-interface PresetVoice {
+/** 前端展示用的预置音色（从 PresetVoiceItem 映射） */
+interface PresetVoiceDisplay {
   id: string;
   name: string;
   gender: VoiceGender;
@@ -42,7 +57,8 @@ interface PresetVoice {
   starred: boolean;
 }
 
-interface ClonedVoice {
+/** 前端展示用的克隆音色（从 VoiceClone 映射） */
+interface ClonedVoiceDisplay {
   id: string;
   name: string;
   sourceName: string;
@@ -54,114 +70,32 @@ interface ClonedVoice {
 }
 
 /* ============================================================
- * Mock 数据（后续替换为 API 调用）
+ * 映射函数
  * ============================================================ */
-const MOCK_PRESET_VOICES: PresetVoice[] = [
-  {
-    id: "pv-1", name: "磁性男声 · 深沉", gender: "male", language: "zh",
-    duration: 45, tags: ["磁性", "深沉", "纪录片"], description: "适合纪录片、品牌宣传片的男声配音",
-    voiceId: "cosyvoice-male-deep", previewUrl: "/mock/audio/preset-1.mp3", starred: true,
-  },
-  {
-    id: "pv-2", name: "温暖男声 · 治愈", gender: "male", language: "zh",
-    duration: 38, tags: ["温暖", "治愈", "故事"], description: "温暖治愈系男声，适合故事讲述",
-    voiceId: "cosyvoice-male-warm", previewUrl: "/mock/audio/preset-2.mp3", starred: false,
-  },
-  {
-    id: "pv-3", name: "活力女声 · 青春", gender: "female", language: "zh",
-    duration: 52, tags: ["活力", "青春", "种草"], description: "活力满满的女声，适合种草类短视频",
-    voiceId: "cosyvoice-female-youth", previewUrl: "/mock/audio/preset-3.mp3", starred: true,
-  },
-  {
-    id: "pv-4", name: "温柔女声 · 优雅", gender: "female", language: "zh",
-    duration: 41, tags: ["温柔", "优雅", "品牌"], description: "知性优雅的女声，适合品牌广告",
-    voiceId: "cosyvoice-female-elegant", previewUrl: "/mock/audio/preset-4.mp3", starred: false,
-  },
-  {
-    id: "pv-5", name: "可爱童声 · 活泼", gender: "child", language: "zh",
-    duration: 35, tags: ["可爱", "活泼", "动画"], description: "活泼可爱的童声，适合动画配音",
-    voiceId: "cosyvoice-child-cute", previewUrl: "/mock/audio/preset-5.mp3", starred: false,
-  },
-  {
-    id: "pv-6", name: "沉稳男声 · 专业", gender: "male", language: "en",
-    duration: 48, tags: ["沉稳", "专业", "商务"], description: "专业沉稳的英文男声",
-    voiceId: "cosyvoice-male-pro-en", previewUrl: "/mock/audio/preset-6.mp3", starred: false,
-  },
-  {
-    id: "pv-7", name: "甜美女声 · 清新", gender: "female", language: "ja",
-    duration: 42, tags: ["甜美", "清新", "日系"], description: "清新甜美的日文女声",
-    voiceId: "cosyvoice-female-sweet-ja", previewUrl: "/mock/audio/preset-7.mp3", starred: false,
-  },
-  {
-    id: "pv-8", name: "沧桑男声 · 故事感", gender: "elderly", language: "zh",
-    duration: 56, tags: ["沧桑", "故事感", "怀旧"], description: "充满阅历感的男声，适合怀旧内容",
-    voiceId: "cosyvoice-elderly-story", previewUrl: "/mock/audio/preset-8.mp3", starred: true,
-  },
-  {
-    id: "pv-9", name: "知性女声 · 商务", gender: "female", language: "zh",
-    duration: 39, tags: ["知性", "商务", "科技"], description: "知性干练的女声，适合科技产品介绍",
-    voiceId: "cosyvoice-female-biz", previewUrl: "/mock/audio/preset-9.mp3", starred: false,
-  },
-  {
-    id: "pv-10", name: "阳光男声 · 运动", gender: "male", language: "zh",
-    duration: 44, tags: ["阳光", "运动", "活力"], description: "阳光活力的男声，适合运动类内容",
-    voiceId: "cosyvoice-male-sport", previewUrl: "/mock/audio/preset-10.mp3", starred: false,
-  },
-  {
-    id: "pv-11", name: "甜美女声 · 韩系", gender: "female", language: "ko",
-    duration: 40, tags: ["甜美", "韩系", "时尚"], description: "甜美时尚的韩文女声",
-    voiceId: "cosyvoice-female-sweet-ko", previewUrl: "/mock/audio/preset-11.mp3", starred: false,
-  },
-  {
-    id: "pv-12", name: "浑厚男声 · 解说", gender: "male", language: "zh",
-    duration: 50, tags: ["浑厚", "解说", "科普"], description: "浑厚有力的男声，适合科普解说",
-    voiceId: "cosyvoice-male-narrator", previewUrl: "/mock/audio/preset-12.mp3", starred: false,
-  },
-];
 
-const MOCK_CLONED_VOICES: ClonedVoice[] = [
-  {
-    id: "cv-1", name: "我的声音副本", sourceName: "录音_2026-06-28",
-    status: "ready", createdAt: "2026-06-28", duration: 30,
-    tags: ["个人", "日常"], voiceId: "clone-voice-001",
-  },
-  {
-    id: "cv-2", name: "主播音色复刻", sourceName: "主播A_训练素材",
-    status: "processing", createdAt: "2026-06-30", duration: 0,
-    tags: ["主播", "专业"], voiceId: "clone-voice-002",
-  },
-];
+const mapPresetToDisplay = (item: PresetVoiceItem): PresetVoiceDisplay => ({
+  id: item.voice_id,
+  name: item.name,
+  gender: (item.gender as VoiceGender) || "female",
+  language: (item.language as VoiceLanguage) || "zh",
+  duration: 0,
+  tags: item.tags,
+  description: item.description,
+  voiceId: item.voice_id,
+  previewUrl: item.preview_url || "",
+  starred: false,
+});
 
-/* ============================================================
- * API 接口预留（CosyVoice 后端对接）
- * ============================================================ */
-export async function fetchPresetVoices(params?: {
-  gender?: VoiceGender;
-  language?: VoiceLanguage;
-  keyword?: string;
-}): Promise<PresetVoice[]> {
-  // TODO: GET /api/v1/voices/preset
-  console.log("[API] fetchPresetVoices", params);
-  return MOCK_PRESET_VOICES;
-}
-
-export async function fetchClonedVoices(): Promise<ClonedVoice[]> {
-  // TODO: GET /api/v1/voices/cloned
-  console.log("[API] fetchClonedVoices");
-  return MOCK_CLONED_VOICES;
-}
-
-export async function getVoicePreviewUrl(voiceId: string): Promise<string> {
-  // TODO: POST /api/v1/voices/{voiceId}/preview
-  console.log("[API] getVoicePreviewUrl", voiceId);
-  const voice = MOCK_PRESET_VOICES.find((v) => v.voiceId === voiceId);
-  return voice?.previewUrl || "";
-}
-
-export async function toggleVoiceStar(voiceId: string, starred: boolean): Promise<void> {
-  // TODO: POST /api/v1/voices/{voiceId}/star
-  console.log("[API] toggleVoiceStar", voiceId, starred);
-}
+const mapCloneToDisplay = (clone: VoiceClone): ClonedVoiceDisplay => ({
+  id: clone.id,
+  name: clone.name,
+  sourceName: clone.sample_url || "未知来源",
+  status: clone.status,
+  createdAt: new Date(clone.created_at).toLocaleDateString("zh-CN"),
+  duration: clone.duration_seconds,
+  tags: [],
+  voiceId: clone.id,
+});
 
 /* ============================================================
  * 工具函数
@@ -300,16 +234,45 @@ const VoiceLibrary: React.FC = () => {
   const navigate = useNavigate();
 
   const [activeTab, setActiveTab] = useState<TabKey>("preset");
-  const [presetVoices, setPresetVoices] = useState<PresetVoice[]>(MOCK_PRESET_VOICES);
   const [searchText, setSearchText] = useState("");
   const [filterGender, setFilterGender] = useState<string>("all");
   const [filterLang, setFilterLang] = useState<string>("all");
-  const [clonedVoices] = useState<ClonedVoice[]>(MOCK_CLONED_VOICES);
 
   const [playingId, setPlayingId] = useState<string | null>(null);
   const [currentTime, setCurrentTime] = useState(0);
   const intervalRef = useRef<number | null>(null);
 
+  /* ── 数据查询（任务 3.11：替换 Mock） ──────────────── */
+
+  /** 预置音色列表 */
+  const { data: presetData, isLoading: presetLoading } = useQuery({
+    queryKey: ["preset-voices"],
+    queryFn: fetchPresetVoices,
+  });
+
+  /** 克隆音色列表 */
+  const { data: cloneData, isLoading: cloneLoading } = useQuery({
+    queryKey: ["voice-clones"],
+    queryFn: () => getVoiceClonesWithTotal({ limit: 50 }),
+  });
+
+  /** 统一统计（preset_count / clone_count） */
+  const { data: unifiedStats } = useQuery({
+    queryKey: ["voices-unified"],
+    queryFn: () => fetchVoices({ limit: 1 }),
+  });
+
+  const presetVoices = useMemo(
+    () => (presetData?.items ?? []).map(mapPresetToDisplay),
+    [presetData],
+  );
+  const clonedVoices = useMemo(
+    () => (cloneData?.items ?? []).map((p) => mapCloneToDisplay(toVoiceClone(p))),
+    [cloneData],
+  );
+  const presetCount = unifiedStats?.preset_count ?? presetData?.total ?? 0;
+  const cloneCount = unifiedStats?.clone_count ?? cloneData?.total ?? 0;
+
   const filteredPreset = useMemo(() => {
     let list = presetVoices;
     if (filterGender !== "all") {
@@ -375,11 +338,8 @@ const VoiceLibrary: React.FC = () => {
     };
   }, []);
 
-  const handleToggleStar = (voiceId: string) => {
-    setPresetVoices((prev) =>
-      prev.map((v) => (v.voiceId === voiceId ? { ...v, starred: !v.starred } : v)),
-    );
-    toggleVoiceStar(voiceId, !presetVoices.find((v) => v.voiceId === voiceId)?.starred);
+  const handleToggleStar = (_voiceId: string) => {
+    // TODO: 后端暂未提供收藏接口
   };
 
   const pageActions = (
@@ -408,7 +368,7 @@ const VoiceLibrary: React.FC = () => {
         >
           <AudioOutlined />
           预置音色
-          <span className="xx-voices-tab-count">{presetVoices.length}</span>
+          <span className="xx-voices-tab-count">{presetCount}</span>
         </button>
         <button
           className={`xx-voices-tab${activeTab === "cloned" ? " active" : ""}`}
@@ -416,7 +376,7 @@ const VoiceLibrary: React.FC = () => {
         >
           <UserOutlined />
           我的克隆
-          <span className="xx-voices-tab-count">{clonedVoices.length}</span>
+          <span className="xx-voices-tab-count">{cloneCount}</span>
         </button>
       </div>
 
@@ -457,7 +417,14 @@ const VoiceLibrary: React.FC = () => {
             />
           </div>
 
-          {filteredPreset.length > 0 ? (
+          {presetLoading && (
+            <div className="xx-voices-empty">
+              <div className="xx-voices-empty-icon"><SoundOutlined /></div>
+              <p>加载预置音色中...</p>
+            </div>
+          )}
+
+          {!presetLoading && filteredPreset.length > 0 && (
             <div className="xx-voice-grid">
               {filteredPreset.map((voice) => (
                 <VoiceCard
@@ -479,7 +446,9 @@ const VoiceLibrary: React.FC = () => {
                 />
               ))}
             </div>
-          ) : (
+          )}
+
+          {!presetLoading && filteredPreset.length === 0 && (
             <div className="xx-voices-empty">
               <div className="xx-voices-empty-icon"><SoundOutlined /></div>
               <p>未找到匹配的音色</p>
@@ -493,7 +462,14 @@ const VoiceLibrary: React.FC = () => {
 
       {activeTab === "cloned" && (
         <div className="xx-voices-tab-content">
-          {clonedVoices.length > 0 ? (
+          {cloneLoading && (
+            <div className="xx-voices-empty">
+              <div className="xx-voices-empty-icon"><UserOutlined /></div>
+              <p>加载克隆音色中...</p>
+            </div>
+          )}
+
+          {!cloneLoading && clonedVoices.length > 0 && (
             <div className="xx-voice-grid">
               {clonedVoices.map((voice) => (
                 <VoiceCard
@@ -514,7 +490,9 @@ const VoiceLibrary: React.FC = () => {
                 />
               ))}
             </div>
-          ) : (
+          )}
+
+          {!cloneLoading && clonedVoices.length === 0 && (
             <div className="xx-voices-empty">
               <div className="xx-voices-empty-icon"><UserOutlined /></div>
               <h3>暂无克隆音色</h3>