MIKE21 BW model is verified by the wave field simulation of single jetty flat terrain and an actual port terrain,which match well with calculating diagram in the specification or physical model test values.At the same time,studies show that as the limitation of numerical format,when the incident wave is oblique,there are evident errors in the model calculation result,and rotating the terrain to adjust the incident wave from oblique to vertical can improve the calculation results of the model.In addition,in the wave simulation at an actual port terrain,the influence of the higher peak factor γ to the wave field is also discussed.