Bullnose has a good effect on reducing overtopping,but there are differences in the calculation methods given by the documents and specifications. According to the experimental results of three-dimensional wave model by domestic and foreign scholars,the relevant codes and documents,combining with the physical model test of practical engineering,we analyze and compare various calculation methods of mean wave overtopping on vertical breakwater with bullnose. The results show that the EurOtop method has wide applicability and gives close results to the experimental values. The CEM formula is simple and has conservative results.It can provide references for the similar projects.