Abstract:Eupatorium adenophorum Spreng invaded the south of Yunnan Province from Burma and Vietnam during the end of 1940s. Up to now,its range has spreaded northwards to 23?0‘N and eastwards to Guangxi and Guizhou Provinces. In the south part of Yunnan E,adenophorum invaded early,its population has expanded and become a monospecies dominated community which invaded farmlands,harmed grasslands and did some impacts on the growth of tress, and as such get a very bad reputation.In this paper,it is suggested that,to eli...