diff --git a/qwen3-tts-backend/api/cache.py b/qwen3-tts-backend/api/cache.py
deleted file mode 100644
index e669396..0000000
--- a/qwen3-tts-backend/api/cache.py
+++ /dev/null
@@ -1,156 +0,0 @@
-import logging
-import json
-from pathlib import Path
-from typing import Optional
-from fastapi import APIRouter, Depends, HTTPException, Request
-from sqlalchemy.orm import Session
-from slowapi import Limiter
-from slowapi.util import get_remote_address
-
-from core.config import settings
-from core.database import get_db
-from core.cache_manager import VoiceCacheManager
-from api.auth import get_current_user
-from db.crud import list_cache_entries, delete_cache_entry
-from db.models import VoiceCache, User
-from utils.metrics import cache_metrics
-
-logger = logging.getLogger(__name__)
-router = APIRouter(prefix="/cache", tags=["cache"])
-
-limiter = Limiter(key_func=get_remote_address)
-
-
-@router.get("/voices")
-@limiter.limit("30/minute")
-async def list_user_caches(
-    request: Request,
-    skip: int = 0,
-    limit: int = 100,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    caches = list_cache_entries(db, current_user.id, skip=skip, limit=limit)
-
-    result = []
-    for cache in caches:
-        meta_data = json.loads(cache.meta_data) if cache.meta_data else {}
-        cache_file = Path(cache.cache_path)
-        file_size_mb = cache_file.stat().st_size / (1024 * 1024) if cache_file.exists() else 0
-
-        result.append({
-            'id': cache.id,
-            'ref_audio_hash': cache.ref_audio_hash,
-            'created_at': cache.created_at.isoformat(),
-            'last_accessed': cache.last_accessed.isoformat(),
-            'access_count': cache.access_count,
-            'metadata': meta_data,
-            'size_mb': round(file_size_mb, 2)
-        })
-
-    return {
-        'caches': result,
-        'total': len(result)
-    }
-
-
-@router.delete("/voices/{cache_id}")
-@limiter.limit("30/minute")
-async def delete_user_cache(
-    request: Request,
-    cache_id: int,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    cache = db.query(VoiceCache).filter(
-        VoiceCache.id == cache_id,
-        VoiceCache.user_id == current_user.id
-    ).first()
-
-    if not cache:
-        raise HTTPException(status_code=404, detail="Cache not found")
-
-    cache_file = Path(cache.cache_path)
-    if cache_file.exists():
-        cache_file.unlink()
-
-    success = delete_cache_entry(db, cache_id, current_user.id)
-
-    if not success:
-        raise HTTPException(status_code=500, detail="Failed to delete cache")
-
-    logger.info(f"Cache deleted: id={cache_id}, user={current_user.id}")
-
-    return {
-        'message': 'Cache deleted successfully',
-        'cache_id': cache_id
-    }
-
-
-@router.delete("/voices")
-@limiter.limit("10/minute")
-async def cleanup_expired_caches(
-    request: Request,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    cache_manager = await VoiceCacheManager.get_instance()
-    deleted_count = await cache_manager.cleanup_expired(db)
-
-    logger.info(f"Expired cache cleanup: user={current_user.id}, deleted={deleted_count}")
-
-    return {
-        'message': 'Expired caches cleaned up',
-        'deleted_count': deleted_count
-    }
-
-
-@router.post("/voices/prune")
-@limiter.limit("10/minute")
-async def prune_caches(
-    request: Request,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    cache_manager = await VoiceCacheManager.get_instance()
-    deleted_count = await cache_manager.enforce_max_entries(current_user.id, db)
-
-    logger.info(f"LRU prune: user={current_user.id}, deleted={deleted_count}")
-
-    return {
-        'message': 'LRU pruning completed',
-        'deleted_count': deleted_count
-    }
-
-
-@router.get("/stats")
-@limiter.limit("30/minute")
-async def get_cache_stats(
-    request: Request,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    stats = cache_metrics.get_stats(db, settings.CACHE_DIR)
-
-    user_stats = None
-    for user_stat in stats['users']:
-        if user_stat['user_id'] == current_user.id:
-            user_stats = user_stat
-            break
-
-    if user_stats is None:
-        user_cache_count = db.query(VoiceCache).filter(
-            VoiceCache.user_id == current_user.id
-        ).count()
-        user_stats = {
-            'user_id': current_user.id,
-            'hits': 0,
-            'misses': 0,
-            'hit_rate': 0.0,
-            'cache_entries': user_cache_count
-        }
-
-    return {
-        'global': stats['global'],
-        'user': user_stats
-    }
diff --git a/qwen3-tts-backend/api/metrics.py b/qwen3-tts-backend/api/metrics.py
deleted file mode 100644
index 728f270..0000000
--- a/qwen3-tts-backend/api/metrics.py
+++ /dev/null
@@ -1,21 +0,0 @@
-import logging
-from fastapi import APIRouter
-
-from core.metrics import MetricsCollector
-
-logger = logging.getLogger(__name__)
-router = APIRouter(prefix="/metrics", tags=["metrics"])
-
-
-@router.get("")
-async def get_metrics():
-    metrics = await MetricsCollector.get_instance()
-    data = await metrics.get_metrics()
-    return data
-
-
-@router.post("/reset")
-async def reset_metrics():
-    metrics = await MetricsCollector.get_instance()
-    await metrics.reset()
-    return {"message": "Metrics reset successfully"}
diff --git a/qwen3-tts-backend/api/tts.py b/qwen3-tts-backend/api/tts.py
index 768f0ba..2e5b601 100644
--- a/qwen3-tts-backend/api/tts.py
+++ b/qwen3-tts-backend/api/tts.py
@@ -665,13 +665,6 @@ async def create_voice_clone_job(
     }
 
 
-@router.get("/models")
-@limiter.limit("30/minute")
-async def list_models(request: Request):
-    model_manager = await ModelManager.get_instance()
-    return model_manager.get_model_info()
-
-
 @router.get("/speakers")
 @limiter.limit("30/minute")
 async def list_speakers(request: Request, backend: Optional[str] = "local"):
diff --git a/qwen3-tts-backend/api/voice_designs.py b/qwen3-tts-backend/api/voice_designs.py
index edd0c84..167421d 100644
--- a/qwen3-tts-backend/api/voice_designs.py
+++ b/qwen3-tts-backend/api/voice_designs.py
@@ -13,7 +13,6 @@ from db import crud
 from schemas.voice_design import (
     VoiceDesignCreate,
     VoiceDesignResponse,
-    VoiceDesignUpdate,
     VoiceDesignListResponse
 )
 
@@ -58,45 +57,6 @@ async def list_voice_designs(
     designs = crud.list_voice_designs(db, current_user.id, backend_type, skip, limit)
     return VoiceDesignListResponse(designs=[VoiceDesignResponse.from_orm(d) for d in designs], total=len(designs))
 
-@router.get("/{design_id}", response_model=VoiceDesignResponse)
-@limiter.limit("30/minute")
-async def get_voice_design(
-    request: Request,
-    design_id: int,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    design = crud.get_voice_design(db, design_id, current_user.id)
-    if not design:
-        raise HTTPException(status_code=404, detail="Voice design not found")
-    return VoiceDesignResponse.from_orm(design)
-
-@router.patch("/{design_id}", response_model=VoiceDesignResponse)
-@limiter.limit("30/minute")
-async def update_voice_design(
-    request: Request,
-    design_id: int,
-    data: VoiceDesignUpdate,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    design = crud.update_voice_design(db, design_id, current_user.id, data.name)
-    if not design:
-        raise HTTPException(status_code=404, detail="Voice design not found")
-    return VoiceDesignResponse.from_orm(design)
-
-@router.delete("/{design_id}", status_code=status.HTTP_204_NO_CONTENT)
-@limiter.limit("30/minute")
-async def delete_voice_design(
-    request: Request,
-    design_id: int,
-    current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
-):
-    success = crud.delete_voice_design(db, design_id, current_user.id)
-    if not success:
-        raise HTTPException(status_code=404, detail="Voice design not found")
-
 @router.post("/{design_id}/prepare-clone")
 @limiter.limit("10/minute")
 async def prepare_voice_clone_prompt(
diff --git a/qwen3-tts-backend/db/crud.py b/qwen3-tts-backend/db/crud.py
index 182e55c..df615de 100644
--- a/qwen3-tts-backend/db/crud.py
+++ b/qwen3-tts-backend/db/crud.py
@@ -329,25 +329,3 @@ def update_voice_design_usage(db: Session, design_id: int, user_id: int) -> Opti
         db.refresh(design)
     return design
 
-def update_voice_design(
-    db: Session,
-    design_id: int,
-    user_id: int,
-    name: Optional[str] = None
-) -> Optional[VoiceDesign]:
-    design = get_voice_design(db, design_id, user_id)
-    if not design:
-        return None
-    if name is not None:
-        design.name = name
-    db.commit()
-    db.refresh(design)
-    return design
-
-def delete_voice_design(db: Session, design_id: int, user_id: int) -> bool:
-    design = get_voice_design(db, design_id, user_id)
-    if not design:
-        return False
-    design.is_active = False
-    db.commit()
-    return True
diff --git a/qwen3-tts-backend/main.py b/qwen3-tts-backend/main.py
index 61244e4..9dc071b 100644
--- a/qwen3-tts-backend/main.py
+++ b/qwen3-tts-backend/main.py
@@ -15,7 +15,7 @@ from core.config import settings
 from core.database import init_db
 from core.model_manager import ModelManager
 from core.cleanup import run_scheduled_cleanup
-from api import auth, jobs, tts, cache, metrics, users, voice_designs
+from api import auth, jobs, tts, users, voice_designs
 from apscheduler.schedulers.asyncio import AsyncIOScheduler
 
 logging.basicConfig(
@@ -130,8 +130,6 @@ if settings.LOG_LEVEL == "debug":
 app.include_router(auth.router)
 app.include_router(jobs.router)
 app.include_router(tts.router)
-app.include_router(cache.router)
-app.include_router(metrics.router)
 app.include_router(users.router)
 app.include_router(voice_designs.router)
 
diff --git a/qwen3-tts-backend/schemas/voice_design.py b/qwen3-tts-backend/schemas/voice_design.py
index 2e3f599..604deed 100644
--- a/qwen3-tts-backend/schemas/voice_design.py
+++ b/qwen3-tts-backend/schemas/voice_design.py
@@ -10,9 +10,6 @@ class VoiceDesignCreate(BaseModel):
     meta_data: Optional[Dict[str, Any]] = None
     preview_text: Optional[str] = None
 
-class VoiceDesignUpdate(BaseModel):
-    name: Optional[str] = Field(None, min_length=1, max_length=100)
-
 class VoiceDesignResponse(BaseModel):
     id: int
     user_id: int
diff --git a/qwen3-tts-frontend/src/components/tts/VoiceDesignForm.tsx b/qwen3-tts-frontend/src/components/tts/VoiceDesignForm.tsx
index a2f3497..e14224e 100644
--- a/qwen3-tts-frontend/src/components/tts/VoiceDesignForm.tsx
+++ b/qwen3-tts-frontend/src/components/tts/VoiceDesignForm.tsx
@@ -132,10 +132,12 @@ const VoiceDesignForm = forwardRef<VoiceDesignFormHandle>((_props, ref) => {
 
     try {
       const backend = preferences?.default_backend || 'local'
+      const text = watch('text')
       const design = await voiceDesignApi.create({
         name: saveDesignName,
         instruct: instruct,
-        backend_type: backend
+        backend_type: backend,
+        preview_text: text || `${saveDesignName}的声音`
       })
 
       toast.success('音色设计已保存')
diff --git a/qwen3-tts-frontend/src/lib/api.ts b/qwen3-tts-frontend/src/lib/api.ts
index 09d4265..17c8fee 100644
--- a/qwen3-tts-frontend/src/lib/api.ts
+++ b/qwen3-tts-frontend/src/lib/api.ts
@@ -399,13 +399,6 @@ export const voiceDesignApi = {
     return response.data
   },
 
-  get: async (id: number): Promise<VoiceDesign> => {
-    const response = await apiClient.get<VoiceDesign>(
-      API_ENDPOINTS.VOICE_DESIGNS.GET(id)
-    )
-    return response.data
-  },
-
   create: async (data: VoiceDesignCreate): Promise<VoiceDesign> => {
     const response = await apiClient.post<VoiceDesign>(
       API_ENDPOINTS.VOICE_DESIGNS.CREATE,
@@ -414,18 +407,6 @@ export const voiceDesignApi = {
     return response.data
   },
 
-  update: async (id: number, name: string): Promise<VoiceDesign> => {
-    const response = await apiClient.patch<VoiceDesign>(
-      API_ENDPOINTS.VOICE_DESIGNS.UPDATE(id),
-      { name }
-    )
-    return response.data
-  },
-
-  delete: async (id: number): Promise<void> => {
-    await apiClient.delete(API_ENDPOINTS.VOICE_DESIGNS.DELETE(id))
-  },
-
   prepareClone: async (id: number): Promise<{ message: string; cache_id: number; ref_text: string }> => {
     const response = await apiClient.post<{ message: string; cache_id: number; ref_text: string }>(
       API_ENDPOINTS.VOICE_DESIGNS.PREPARE_CLONE(id)
diff --git a/qwen3-tts-frontend/src/lib/constants.ts b/qwen3-tts-frontend/src/lib/constants.ts
index e67ae10..105a14f 100644
--- a/qwen3-tts-frontend/src/lib/constants.ts
+++ b/qwen3-tts-frontend/src/lib/constants.ts
@@ -30,9 +30,6 @@ export const API_ENDPOINTS = {
   VOICE_DESIGNS: {
     LIST: '/voice-designs',
     CREATE: '/voice-designs',
-    GET: (id: number) => `/voice-designs/${id}`,
-    UPDATE: (id: number) => `/voice-designs/${id}`,
-    DELETE: (id: number) => `/voice-designs/${id}`,
     PREPARE_CLONE: (id: number) => `/voice-designs/${id}/prepare-clone`,
   },
 } as const