Abstract: In order to study the effect of the flow control method on the aerodynamic performance and erosion wear of NACA 0012 airfoil in windy and sandy environment,this paper adopts the method of controlling airflow by arranging tiny cylinders on the leading edge of the wind turbine airfoil,and the discrete term model and SST k-ω turbulence model are used to numerically calculate the control airfoil.The results show that when the angle of attack is small,the best control effect is achieved when the position of the tiny cylinder is at X = 0.04 and Y =-0.03,which can suppress the flow separation and increase the lift resistance ratio by 149.72% compared with the original airfoil;when the position of the tiny cylinder is at X = 0.02 and Y =-0.02,the reduction of airfoil erosion wear is the greatest,which is reduced by 97.66% compared with the original airfoil;when the position of the tiny cylinder is in the optimal region, the airfoil erosion wear is reduced at the same time as the lift-to-resistance ratio is increased.