diff --git a/backend/alembic/versions/021_user_ws_ddl.py b/backend/alembic/versions/021_user_ws_ddl.py
index c5f90fa7..fe05292b 100644
--- a/backend/alembic/versions/021_user_ws_ddl.py
+++ b/backend/alembic/versions/021_user_ws_ddl.py
@@ -29,5 +29,5 @@ def upgrade():
 
 
 def downgrade():
-    op.drop_index(op.f('ix_sys_user_ws_id'), table_name='sys_user_ws')
+    #op.drop_index(op.f('ix_sys_user_ws_id'), table_name='sys_user_ws')
     op.drop_table('sys_user_ws')
diff --git a/backend/apps/system/api/user.py b/backend/apps/system/api/user.py
index 7bd6aae5..30b5909b 100644
--- a/backend/apps/system/api/user.py
+++ b/backend/apps/system/api/user.py
@@ -1,22 +1,18 @@
 from fastapi import APIRouter
 from apps.system.crud.user import get_db_user
 from apps.system.models.user import UserModel
+from apps.system.schemas.auth import CacheName, CacheNamespace
 from apps.system.schemas.system_schema import PwdEditor, UserCreator, UserEditor, UserGrid, UserLanguage
 from common.core.deps import CurrentUser, SessionDep
 from common.core.pagination import Paginator
 from common.core.schemas import PaginatedResponse, PaginationParams
 from common.core.security import md5pwd, verify_md5pwd
-
+from common.core.sqlbot_cache import clear_cache
 router = APIRouter(tags=["user"], prefix="/user")
 
-
 @router.get("/info")
-async def user_info(session: SessionDep, current_user: CurrentUser):
-    db_user = get_db_user(session=session, user_id=current_user.id)
-    if not db_user:
-        return {"message": "User not found"}
-    db_user.password = None
-    return db_user
+async def user_info(current_user: CurrentUser):
+    return current_user
 
 
 @router.get("/pager/{pageNum}/{pageSize}", response_model=PaginatedResponse[UserGrid])
@@ -48,6 +44,7 @@ async def create(session: SessionDep, creator: UserCreator):
     session.commit()
     
 @router.put("")
+@clear_cache(namespace=CacheNamespace.AUTH_INFO, cacheName=CacheName.USER_INFO, keyExpression="editor.id")
 async def update(session: SessionDep, editor: UserEditor):
     user_model: UserModel = get_db_user(session = session, user_id = editor.id)
     data = editor.model_dump(exclude_unset=True)
@@ -55,13 +52,15 @@ async def update(session: SessionDep, editor: UserEditor):
     session.add(user_model)
     session.commit()
     
-@router.delete("/{id}") 
+@router.delete("/{id}")
+@clear_cache(namespace=CacheNamespace.AUTH_INFO, cacheName=CacheName.USER_INFO, keyExpression="id")
 async def delete(session: SessionDep, id: int):
     user_model: UserModel = get_db_user(session = session, user_id = id)
     session.delete(user_model)
     session.commit()
     
 @router.put("/language")
+@clear_cache(namespace=CacheNamespace.AUTH_INFO, cacheName=CacheName.USER_INFO, keyExpression="current_user.id")
 async def langChange(session: SessionDep, current_user: CurrentUser, language: UserLanguage):
     lang = language.language
     if lang not in ["zh-CN", "en"]:
@@ -73,6 +72,7 @@ async def langChange(session: SessionDep, current_user: CurrentUser, language: U
     return {"message": "Language changed successfully", "language": lang}
 
 @router.put("/pwd")
+@clear_cache(namespace=CacheNamespace.AUTH_INFO, cacheName=CacheName.USER_INFO, keyExpression="current_user.id")
 async def pwdUpdate(session: SessionDep, current_user: CurrentUser, editor: PwdEditor):
     db_user: UserModel = get_db_user(session=session, user_id=current_user.id)
     if not verify_md5pwd(editor.pwd, db_user.password):
diff --git a/backend/apps/system/crud/user.py b/backend/apps/system/crud/user.py
index dba60afd..5f34daf9 100644
--- a/backend/apps/system/crud/user.py
+++ b/backend/apps/system/crud/user.py
@@ -1,14 +1,15 @@
 
 from sqlmodel import Session, select
 
-from apps.system.schemas.system_schema import BaseUserDTO
+from apps.system.models.system_model import UserWsModel
+from apps.system.schemas.auth import CacheName, CacheNamespace
+from apps.system.schemas.system_schema import BaseUserDTO, UserInfoDTO
+from common.core.sqlbot_cache import cache
 from ..models.user import UserModel
 from common.core.security import verify_md5pwd
 
 def get_db_user(*, session: Session, user_id: int) -> UserModel:
     db_user = session.get(UserModel, user_id)
-    if not db_user:
-        raise RuntimeError("user not exist")
     return db_user
 
 def get_user_by_account(*, session: Session, account: str) -> BaseUserDTO | None:
@@ -18,9 +19,16 @@ def get_user_by_account(*, session: Session, account: str) -> BaseUserDTO | None
         return None
     return BaseUserDTO.model_validate(db_user.model_dump())
 
-def get_user_info(*, session: Session, user_id: int) -> BaseUserDTO | None:
-    db_user = get_db_user(session = session, user_id = user_id)
-    return BaseUserDTO.model_validate(db_user.model_dump())
+@cache(namespace=CacheNamespace.AUTH_INFO, cacheName=CacheName.USER_INFO, keyExpression="user_id")
+async def get_user_info(*, session: Session, user_id: int) -> UserInfoDTO | None:
+    db_user: UserModel = get_db_user(session = session, user_id = user_id)
+    userInfo = UserInfoDTO.model_validate(db_user.model_dump())
+    userInfo.isAdmin = userInfo.id == 1 and userInfo.account == 'admin'
+    if userInfo.isAdmin:
+        return userInfo
+    ws_model: UserWsModel = session.exec(select(UserWsModel).where(UserWsModel.uid == userInfo.id, UserWsModel.oid == userInfo.oid)).first()
+    userInfo.weight = ws_model.weight if ws_model else -1
+    return userInfo
 
 def authenticate(*, session: Session, account: str, password: str) -> BaseUserDTO | None:
     db_user = get_user_by_account(session=session, account=account)
diff --git a/backend/apps/system/schemas/auth.py b/backend/apps/system/schemas/auth.py
index 2c5d2042..fd50737d 100644
--- a/backend/apps/system/schemas/auth.py
+++ b/backend/apps/system/schemas/auth.py
@@ -1,7 +1,17 @@
 
 from pydantic import BaseModel
-
+from enum import Enum
 
 class LocalLoginSchema(BaseModel):
     account: str
-    password: str
\ No newline at end of file
+    password: str
+    
+class CacheNamespace(Enum):
+    AUTH_INFO = "sqlbot:auth"
+    def __str__(self):
+        return self.value
+class CacheName(Enum):
+    USER_INFO = "user:info"
+
+    def __str__(self):
+        return self.value
\ No newline at end of file
diff --git a/backend/apps/system/schemas/system_schema.py b/backend/apps/system/schemas/system_schema.py
index f512e72f..683f7de6 100644
--- a/backend/apps/system/schemas/system_schema.py
+++ b/backend/apps/system/schemas/system_schema.py
@@ -25,8 +25,6 @@ class BaseUserDTO(BaseUser, BaseCreatorDTO):
             "oid": self.oid
         }
 
-
-
 class UserCreator(BaseUser):
     name: str
     email: str
@@ -47,4 +45,10 @@ class UserWsBase(BaseModel):
     uid: int
     oid: int
 class UserWsDTO(UserWsBase):
-    weight: int = 0
\ No newline at end of file
+    weight: int = 0
+    
+
+class UserInfoDTO(UserEditor):
+    language: str = "zh-CN"
+    weight: int = 0
+    isAdmin: bool = False
\ No newline at end of file
diff --git a/backend/common/core/deps.py b/backend/common/core/deps.py
index 84dc3659..3480886b 100644
--- a/backend/common/core/deps.py
+++ b/backend/common/core/deps.py
@@ -6,13 +6,12 @@ from fastapi import Depends, HTTPException, Request, status
 from jwt.exceptions import InvalidTokenError
 from pydantic import ValidationError
 from sqlmodel import Session
-from apps.system.crud.user import get_db_user
-from apps.system.schemas.system_schema import BaseUserDTO
+from apps.system.crud.user import get_user_info
+from apps.system.schemas.system_schema import UserInfoDTO
 from common.core.schemas import TokenPayload, XOAuth2PasswordBearer
 from common.core import security
 from common.core.config import settings
 from common.core.db import get_session
-from apps.system.models.user import UserModel
 from common.utils.locale import I18n
 reusable_oauth2 = XOAuth2PasswordBearer(
     tokenUrl=f"{settings.API_V1_STR}/login/access-token"
@@ -28,7 +27,7 @@ async def get_i18n(request: Request):
     return i18n(request)
 
 Trans = Annotated[I18n, Depends(get_i18n)]
-async def get_current_user(session: SessionDep, token: TokenDep) -> BaseUserDTO:
+async def get_current_user(session: SessionDep, token: TokenDep) -> UserInfoDTO:
     try:
         payload = jwt.decode(
             token, settings.SECRET_KEY, algorithms=[security.ALGORITHM]
@@ -39,16 +38,15 @@ async def get_current_user(session: SessionDep, token: TokenDep) -> BaseUserDTO:
             status_code=status.HTTP_403_FORBIDDEN,
             detail="Could not validate credentials",
         )
-    session_user: UserModel = get_db_user(session = session, user_id = token_data.id)
+    session_user = await get_user_info(session = session, user_id = token_data.id)
+    session_user = UserInfoDTO.model_validate(session_user)
     if not session_user:
         raise HTTPException(status_code=404, detail="User not found")
-    user = BaseUserDTO.model_validate(session_user.model_dump())
-    if not user:
-        raise HTTPException(status_code=404, detail="User not found")
-    """ if not user.is_active:
-        raise HTTPException(status_code=400, detail="Inactive user") """
-    return user
-CurrentUser = Annotated[BaseUserDTO, Depends(get_current_user)]
+    
+    if session_user.status != 1:
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return session_user
+CurrentUser = Annotated[UserInfoDTO, Depends(get_current_user)]
 
 
 
diff --git a/backend/common/core/sqlbot_cache.py b/backend/common/core/sqlbot_cache.py
new file mode 100644
index 00000000..9a00a9d1
--- /dev/null
+++ b/backend/common/core/sqlbot_cache.py
@@ -0,0 +1,179 @@
+from fastapi_cache import FastAPICache
+from fastapi_cache.decorator import cache as original_cache
+from functools import partial, wraps
+from typing import Optional, Set, Any, Dict, Tuple
+from inspect import Parameter, signature
+import logging
+
+logger = logging.getLogger(__name__)
+
+def should_skip_param(param: Parameter) -> bool:
+    """判断参数是否应该被忽略(依赖注入参数)"""
+    return (
+        param.kind == Parameter.VAR_KEYWORD or  # **kwargs
+        param.kind == Parameter.VAR_POSITIONAL or  # *args
+        hasattr(param.annotation, "__module__") and 
+        param.annotation.__module__.startswith(('fastapi', 'starlette', "sqlmodel.orm.session"))
+    )
+
+def custom_key_builder(
+    func: Any,
+    namespace: str = "",
+    *,
+    args: Tuple[Any, ...] = (),
+    kwargs: Dict[str, Any],
+    additional_skip_args: Optional[Set[str]] = None,
+    cacheName: Optional[str] = None,
+    keyExpression: Optional[str] = None,
+) -> str:
+    """
+    完全兼容FastAPICache的键生成器
+    """
+    if cacheName: 
+        base_key = f"{namespace}:{cacheName}:"
+        
+        if keyExpression:
+            try:
+                sig = signature(func)
+                bound_args = sig.bind_partial(*args, **kwargs)
+                bound_args.apply_defaults()
+                
+                
+                if keyExpression.startswith("args["):
+                    import re
+                    match = re.match(r"args\[(\d+)\]", keyExpression)
+                    if match:
+                        index = int(match.group(1))
+                        value = bound_args.args[index]
+                        base_key += f"{value}:"
+                else:
+                    
+                    parts = keyExpression.split('.')
+                    value = bound_args.arguments[parts[0]]
+                    for part in parts[1:]:
+                        value = getattr(value, part)
+                    base_key += f"{value}:"
+                
+            except (IndexError, KeyError, AttributeError) as e:
+                logger.warning(f"Failed to evaluate keyExpression '{keyExpression}': {str(e)}")
+        
+        return base_key
+    # 获取函数签名
+    sig = signature(func)
+    
+    # 自动识别要跳过的参数
+    auto_skip_args = {
+        name for name, param in sig.parameters.items()
+        if should_skip_param(param)
+    }
+    
+    # 合并用户指定的额外跳过参数
+    skip_args = auto_skip_args.union(additional_skip_args or set())
+    
+    # 过滤kwargs
+    filtered_kwargs = {
+        k: v for k, v in kwargs.items() if k not in skip_args
+    }
+    
+    # 过滤args - 将位置参数映射到它们的参数名
+    bound_args = sig.bind_partial(*args, **kwargs)
+    bound_args.apply_defaults()
+    
+    filtered_args = []
+    for i, (name, value) in enumerate(bound_args.arguments.items()):
+        # 只处理位置参数 (在args中的参数)
+        if i < len(args) and name not in skip_args:
+            filtered_args.append(value)
+    filtered_args = tuple(filtered_args)
+    
+    # 获取默认键生成器
+    default_key_builder = FastAPICache.get_key_builder()
+    # 调用默认键生成器（严格按照其要求的参数格式）
+    return default_key_builder(
+        func=func,
+        namespace=namespace,
+        args=filtered_args,
+        kwargs=filtered_kwargs,
+    )
+
+def cache(
+    expire: Optional[int] = 60 * 60 * 24,
+    namespace: Optional[str] = None,
+    key_builder: Optional[Any] = None,
+    *,
+    additional_skip_args: Optional[Set[str]] = None,
+    cacheName: Optional[str] = None,
+    keyExpression: Optional[str] = None,
+):
+    """
+    完全兼容的缓存装饰器
+    """
+    def decorator(func):
+        if key_builder is None:
+            used_key_builder = partial(
+                custom_key_builder,
+                additional_skip_args=additional_skip_args,
+                cacheName=cacheName,
+                keyExpression=keyExpression
+            )
+        else:
+            used_key_builder = key_builder
+            
+        @wraps(func)
+        async def wrapper(*args, **kwargs):
+            # 准备键生成器参数
+            key_builder_args = {
+                "func": func,
+                "namespace": namespace,
+                "args": args,
+                "kwargs": kwargs
+            }
+            
+            # 生成缓存键
+            cache_key = used_key_builder(**key_builder_args)
+            logger.debug(f"Generated cache key: {cache_key}")
+            
+            # 使用原始缓存装饰器
+            return await original_cache(
+                expire=expire,
+                namespace=namespace,
+                key_builder=lambda *_, **__: cache_key  # 直接使用预生成的key
+            )(func)(*args, **kwargs)
+        return wrapper
+    return decorator
+
+def clear_cache(
+    namespace: Optional[str] = None,
+    cacheName: Optional[str] = None,
+    keyExpression: Optional[str] = None,
+):
+    """
+    清除缓存的装饰器，参数与 @cache 保持一致
+    使用方式：
+    @clear_cache(namespace="user", cacheName="info", keyExpression="user_id")
+    async def update_user(user_id: int):
+        ...
+    """
+    def decorator(func):
+        @wraps(func)
+        async def wrapper(*args, **kwargs):
+            # 1. 生成缓存键（复用 custom_key_builder 逻辑）
+            cache_key = custom_key_builder(
+                func=func,
+                namespace=namespace or "",
+                args=args,
+                kwargs=kwargs,
+                cacheName=cacheName,
+                keyExpression=keyExpression,
+            )
+            
+            logger.debug(f"Clearing cache for key: {cache_key}")
+            
+            # 2. 清除缓存
+            await FastAPICache.clear(key=cache_key)
+            
+            # 3. 执行原函数
+            return await func(*args, **kwargs)
+        
+        return wrapper
+    return decorator
\ No newline at end of file
diff --git a/backend/main.py b/backend/main.py
index 1a67bf6f..17dda32b 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -14,7 +14,8 @@ from alembic import command
 from fastapi_mcp import FastApiMCP
 from fastapi.staticfiles import StaticFiles
 import sqlbot_xpack
-
+from fastapi_cache import FastAPICache
+from fastapi_cache.backends.inmemory import InMemoryBackend
 
 def run_migrations():
     alembic_cfg = Config("alembic.ini")
@@ -24,6 +25,8 @@ def run_migrations():
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     run_migrations()
+    FastAPICache.init(InMemoryBackend())
+    print("✅ FastAPICache 初始化完成")
     yield
 
 
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 2f894061..056d88fb 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -37,6 +37,7 @@ dependencies = [
     "fastapi-mcp (>=0.3.4,<0.4.0)",
     "tabulate>=0.9.0",
     "sqlbot-xpack==0.0.3.2",
+    "fastapi-cache2>=0.2.2",
 ]
 [[tool.uv.index]]
 name = "default"