diff --git a/app/services/checkpoint.py b/app/services/checkpoint.py
index 88de154..fd889e4 100644
--- a/app/services/checkpoint.py
+++ b/app/services/checkpoint.py
@@ -2,10 +2,12 @@ from sqlalchemy.orm import Session
 from typing import List, Optional, Dict, Any
 from ..models.checkpoint import Checkpoint
 from .base import BaseService
+from .section_data import SectionDataService
 
 class CheckpointService(BaseService[Checkpoint]):
     def __init__(self):
         super().__init__(Checkpoint)
+        self.section_service = SectionDataService()
 
     def get_by_section_id(self, db: Session, section_id: str) -> List[Checkpoint]:
         """根据断面ID获取观测点"""
@@ -34,6 +36,7 @@ class CheckpointService(BaseService[Checkpoint]):
     def batch_import_checkpoints(self, db: Session, data: List) -> Dict[str, Any]:
         """
         批量导入观测点数据，根据观测点ID判断是否重复，重复数据改为更新操作
+        判断断面id是否存在，不存在则全部不导入
         支持事务回滚，失败时重试一次
         """
         import logging
@@ -55,12 +58,11 @@ class CheckpointService(BaseService[Checkpoint]):
                     try:
 
                         # 判断断面id是否存在
-                        section = self.get_by_section_id(db, item_data.get('section_id'))
+                        section = self.section_service.get_by_section_id(db, item_data.get('section_id'))
                         if not section:
                             logger.error(f"Section {item_data.get('section_id')} not found")
                             raise Exception(f"Section {item_data.get('section_id')} not found")
 
-
                         checkpoint = self.get_by_point_id(db, item_data.get('point_id'))
                         if checkpoint:
                             # 更新操作