Based on the wave and meteorological data near Chaohu Lake area,we apply the wave mathematical model to research wind wave characteristics of Chaohu Lake,which is verified by the field observation data and considered the influence of wind energy input and bottom friction of nonlinear parabolic mild-slope equation.The mathematical model can better predict the distribution of wave field and wave height in Chaohu Lake.Combined with the topography and layout of the lake area,we carry out the omnidirectional wave numerical simulation,and obtain the distribution of the wave field in the lake area,which provides a reference for the related engineering design.