Abstract: From a small region to global scale, water and heat are the leading factors of determining the distribution of plant species, lifeform and vegetation types. But in the landscape or even smaller scales, regional environmental factors decide the structure of plant community. Quantitative classification and ordination are the important methods for studying community ecological relationships, providing a reasonable and effective way of revealing the relationship among vegetation, plant community and environment objectively and exactly. From the perspective of the pattern of community distribution and species diversity, this paper summarized the research progress on quantitative classification and ordination of mountain plant communities in china, analyzed the necessity of using quantitative classification and ordination methods to study the relationship between vegetation and environmental factors, as well as practically discussed developmental tendencies and some urgent problems in the future research of the fields in terms of the realities in China in order to play an important reference for the research of mountain ecology and the ecological relations of mountain vegetation communities.