The invention discloses a method for simulating a wind field of an extreme arid region based on WRF. The method comprises the steps: (1), selecting a mode parameter optimization scheme set of different ground floors, land process and planet boundary layers having great influence on simulation of the boundary layer wind field, comparing the mode parameter optimization schemes, and selecting the most suitable mode parameter optimization scheme for wind energy simulation, (2), carrying out the wind energy simulation of a wind filed of an extreme arid region to be detected within the preset duration according to the mode parameter optimization scheme obtained in the step (1), and (3), obtaining a wind field simulation configuration scheme suitable for the extreme arid region to be detected according to the wind energy simulation result obtained in the step (2). The method for simulating the wind field of the extreme arid region based on the WRF can overcome the defects that simulation accuracy is low, simulation correctness is poor and the application range is small in the prior art, and has the advantages of high simulation accuracy, good simulation correctness and large application range.