Bapu ship lock is a key node project of the second channel connecting Beijing-Hangzhou Canal and Qiantang River,and the operation of the locks is affected by the tidal surges of Qiantang River.To ensure the long-term stable and efficient operation of Bapu ship lock,the overall operation of the locks debugging and the real ship test are carried out for the tidal surges of different tide heights in different seasons of Qiantang River,and the operation and navigation status of Bapu ship lock during tidal flooding is measured to ensure the safety of the lock.The results show that during the small tidal flood of Qiantang River,the tidal water has limited influence on Bapu ship lock,and the Bapu ship lock can operate normally.During the big tidal flood,the conditions of the approach channel are poor,and the Bapu lock should put down the tidal gate to stop the operation,and then carry on the navigation after the tide goes out.