The analysis of stand structure plays a very important role in the research of stand growth manage- ment. The structure and quality of stand can improve.a lot under analysis of the stand structure. Mixture plantation data of Cunninghamia lanceolata and Liriodendron are used in this paper, which are planted in the HuangFengQiao state--owned forest farms, YouXian County, HuNan province. And the visualized analysis of tree height, diameter structure, uniform angle index and mingling, is based on the 3D virtual visualiza- tion system. The experiment results show that the methods of visualized anal...