diff --git a/backend/app/api/v1/sql_executor.py b/backend/app/api/v1/sql_executor.py
index c1231c7..69f6387 100644
--- a/backend/app/api/v1/sql_executor.py
+++ b/backend/app/api/v1/sql_executor.py
@@ -12,7 +12,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.engine.result import Result
 import structlog
 
-from app.core.deps import get_current_user, get_db
+from app.core.deps import get_current_user, get_db, require_admin
 try:
     from app.core.simple_auth import get_current_user_simple
 except ImportError:
@@ -57,7 +57,7 @@ def serialize_row(row: Any) -> Union[Dict[str, Any], Any]:
 @router.post("/execute", response_model=ResponseModel)
 async def execute_sql(
     request: Dict[str, Any],
-    current_user: User = Depends(get_current_user),
+    current_user: User = Depends(require_admin),
     db: AsyncSession = Depends(get_db)
 ) -> ResponseModel:
     """
@@ -74,7 +74,7 @@ async def execute_sql(
             - 写入操作：返回影响的行数
     
     安全说明：
-        - 需要用户身份验证
+        - 需要管理员权限
         - 所有操作都会记录日志
         - 建议在生产环境中限制可执行的 SQL 类型
     """
@@ -196,11 +196,13 @@ async def execute_sql(
 @router.post("/validate", response_model=ResponseModel)
 async def validate_sql(
     request: Dict[str, Any],
-    current_user: User = Depends(get_current_user)
+    current_user: User = Depends(require_admin)
 ) -> ResponseModel:
     """
     验证 SQL 语句的语法（不执行）
     
+    权限：需要管理员权限
+    
     Args:
         request: 包含 sql 字段的请求
     
@@ -253,12 +255,14 @@ async def validate_sql(
 
 @router.get("/tables", response_model=ResponseModel)
 async def get_tables(
-    current_user: User = Depends(get_current_user),
+    current_user: User = Depends(require_admin),
     db: AsyncSession = Depends(get_db)
 ) -> ResponseModel:
     """
     获取数据库中的所有表
     
+    权限：需要管理员权限
+    
     Returns:
         数据库表列表
     """
@@ -290,12 +294,14 @@ async def get_tables(
 @router.get("/table/{table_name}/schema", response_model=ResponseModel)
 async def get_table_schema(
     table_name: str,
-    current_user: User = Depends(get_current_user),
+    current_user: User = Depends(require_admin),
     db: AsyncSession = Depends(get_db)
 ) -> ResponseModel:
     """
     获取指定表的结构信息
     
+    权限：需要管理员权限
+    
     Args:
         table_name: 表名