Abstract: The thesis dwells on the conceptual revolution of microbiology caused by micro-ecology as well as on the mushrooming of ecological preparations．The vegetation micro-ecological concepts and their forming process are also discussed in this paper Besides，vegetaion micro-ecological preparations(the concept of beneficial micro-ecological preparations and their filtration，their functional mechanism and characteristics)are specifically considered．And finally the paper focuses on the relationship between micro-ecology and sustainable agriculture(ecological agriculture)．