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This paper proposed a method for point cloud data to rebuild three-dimensional tree model based on laser range finder (Terrestrial LiDAR,TLiDAR).The advantage of using TLiDAR point cloud data to construct threedimensional tree models are the precise reconstruction of tree models,the precise amount of take trees any site size,andexempt or subject to less outside interference.Use this model to assess the status of foliage canopy for trees,as well as trunk ross-sectional area has a significant advantage in the calculation of three-dimensional green biomass and biomass.