Abstract: To realize the low-velocity and steady landing of the fixed-wing unmanned aerial vehicle(UAV),the process of solving the coefficients of aerodynamic force for a fixed-wing UAV based on CFD(computational fluid dynamics) method is illustrated,taking a UAV as an example.This process includes modeling a geometry for the UAV,setting computational domain and generating meshes,and solving the coefficients of aerodynamic force in various flying statuses under K-E turbulence model based on the uncoupled implicit solver.A landing control method for keeping the UAV landing with low-velocity sliding and in a large angle of attack is proposed.Based on the solved coefficients of aerodynamic force,the right status of the pre-landing is computed,and the longitudinal control law based on the state feedback is used to realize the landing control. The simulation programme constructed on the basis of AeroSim toolbox in Simulink environment verifies the efficiency of the method.