In order to analyze the safety situation of the 2023 Shangqiao hub after the flood season,the deformation data of hub after the flood is analyzed.Taking shiplock as an example,by collecting the deformation data of every monitoring point on site,the maximum displacement point of the left lock chamber wall in the north-south direction is J9,and the cumulative displacement in the south direction is 7.95 mm.The maximum displacement point in the east-west direction is J10,and the accumulative displacement to the west is 7.60 mm.The maximum accumulative displacement of the right chamber wall in the north-south and east-west directions is point J-5,with the accumulative displacement to the north and west being 7.10 mm and 7.10 mm respectively.It is suggested that the observation should be strengthened and the base point should be set outside the gate area to improve the monitoring accuracy.