Based on the sectional and overall model test,we carry out a research on the wave overtopping and drainage system of vertical wharf and make comparative analysis of the significant wave height,wave overtopping and drainage system,the results of which show that general measurement results of the sectional model test are larger than those of the overall model test,and the sectional model test has limitations while the overall model test tallies better with the actual situation.According to results of the overall model test,we analyze the influence of relative guard curbs freeboard and wave incident direction on the wave overtopping,and the control of wave overtopping on the drainage system,and propose the optimization scheme,which may serve as reference for the engineering design.