Aiming at the problem that it is difficult to accurately set the reserved settlement on the top of the wave retaining wall when the revetment on soft soil foundation is completed,we take the revetment of Xiaohudao petrochemical wharf phase I project as the research object,and use the hyperbolic method and the three-point method to calculate the post-construction settlement based on several months’ settlement observation data of typical revetment sections.The results show that the three-point method is affected by various factors such as irregular loading and variation of groundwater level,and the measured settlement curve is often not smooth enough,which leads to difficult selection of points,difficult control of errors and abnormal calculation results.The hyperbolic method is relatively simple,and the data processing is simple,which is easy to be applied and promoted on site.It is more reasonable and reliable that using the calculation results by the hyperbolic method and the theoretical calculations to set the reserved settlement of the wave retaining wall.