The Airborne Laser Scanner(ALS) can obtain high-resolution three-dimensional information about features of the earth surface.The three-dimensional laser scanning data have been used extensively in urban planning,urban ecological research and three-dimensional city modeling.Based on Support Vector Machine(SVM) of three-dimensional LiDar data classification methods,kd-trees was used to storage disorder of point cloud data,the different vegetation surface characteristic values in the local domain were achieved by analyzing the geometry connect...