Based on low level micro scale atmosphere model above the aerodrome and the characteristics of Doppler lidar wind data,a new method of geometric algorithms is proposed for meteorological radar wind 3D retrieval.The algorithm is an improvement to the existing VVP theories and algorithms.The algorithm is under the assumption that a 3 D wind field is locally homogeneous.The method processes the radial velocity,which is detected by Doppler lidar,to retrieval the actual wind speed and angle.So we can detect the wind shear and other disastrous weather.By comparing the retrieval data with the original data,analysis of retrieval errors was made,the result shows that the geometric method can better reflect the variation trend of micro-scale wind field.