diff --git a/app/api/endpoints/account.py b/app/api/endpoints/account.py
index 99c7339..9ab5e20 100644
--- a/app/api/endpoints/account.py
+++ b/app/api/endpoints/account.py
@@ -29,6 +29,7 @@ async def account_summary(
         UserAccountDB.user_id == current_user.userid
     ).first()
     balance = account.balance if account else Decimal('0')
+    lock_balance = account.lock_balance if account else Decimal('0')
 
     # 查询总收入金额
     total_income = db.query(func.sum(AccountDetailDB.amount)).filter(
@@ -44,7 +45,9 @@ async def account_summary(
     ).scalar() or Decimal('0')
 
     return success_response(data={
+        "total_balance": float(balance + lock_balance),  # 总余额
         "balance": float(balance),  # 账户余额
+        "lock_balance": float(lock_balance),  # 锁定余额
         "total_income": float(total_income),  # 总收入金额
         "today_income": float(today_income),  # 今日收入金额
     })
diff --git a/app/api/endpoints/withdraw.py b/app/api/endpoints/withdraw.py
index ff4974c..b6d60db 100644
--- a/app/api/endpoints/withdraw.py
+++ b/app/api/endpoints/withdraw.py
@@ -114,6 +114,41 @@ async def approve_withdraw(
         db.rollback()
         return error_response(code=500, message=f"审核失败: {str(e)}")
 
+@router.post("/{withdraw_id}/cancel", response_model=ResponseModel)
+async def cancel_withdraw(
+    withdraw_id: int,
+    db: Session = Depends(get_db),
+    current_user: UserDB = Depends(get_current_user)
+):
+    """取消提现申请"""
+    withdraw = db.query(WithdrawDB).filter(
+        WithdrawDB.id == withdraw_id,
+        WithdrawDB.status == WithdrawStatus.PENDING,
+        WithdrawDB.user_id == current_user.userid
+    ).first()
+    
+    if not withdraw:
+        return error_response(code=404, message="提现申请不存在或已处理")
+    
+    try:
+        # 更新提现状态
+        withdraw.status = WithdrawStatus.CANCELLED
+        
+        # 返还锁定余额
+        account = db.query(UserAccountDB).filter(
+            UserAccountDB.user_id == withdraw.user_id
+        ).first()
+        
+        account.balance += withdraw.amount
+        account.lock_balance -= withdraw.amount
+        
+        db.commit()
+        return success_response(message="提现申请已取消")
+    except Exception as e:
+        db.rollback()
+        return error_response(code=500, message=f"处理失败: {str(e)}")
+
+
 @router.post("/{withdraw_id}/reject", response_model=ResponseModel)
 async def reject_withdraw(
     withdraw_id: int,
diff --git a/app/models/withdraw.py b/app/models/withdraw.py
index ec2d3ec..50a6988 100644
--- a/app/models/withdraw.py
+++ b/app/models/withdraw.py
@@ -11,6 +11,7 @@ class WithdrawStatus(str, enum.Enum):
     PENDING = "PENDING"    # 已申请
     APPROVED = "APPROVED"  # 已通过
     REJECTED = "REJECTED"  # 已驳回
+    CANCELLED = "CANCELLED"  # 已取消
 
 class WithdrawDB(Base):
     __tablename__ = "withdraws"