The Velocity distribution of the atmospheric turbulence boundary layer of the Earth Was calculated. Based on the calculation of the threshold friction speed of saltation and the turbulence boundary-xayer, the extent of the boundary layer where saltation may occure was obtained. The rotation moment of force which plays an important role in the movement of sand consists of lift and interparticle force in the early stage of saltation.The duration and the strength of the moment of force were calculated.The trajectory and the movement parameters of saltation were obtained. All results of calculation tully with the experiment results.