A two dimesional static model is developed in the present paper,taking into account the physical processes such as the solar longwave and shortwave radiations,moisture of air,roughness of the earth-surface,albedo,temperature of the soil layers. Some effects of the longwave and shortwave radiations on seawind are discussed by using this model. It is found that if the radiations are neglected,seawind will be confined to only a small space without reaching further into the inland.