The Asian monsoon system can be categorized into three relatively independent sub-systems,including South Asian monsoon,East Asian monsoon,and plateau monsoon.This paper summarizes the importance of the Tibetan plateau on the formation and evolution of Asian monsoon,and discusses the impact of Tibetan plateau on the three sub-systems respectively.The conclusion is shown as follow: the Tibetan plateau impacted the time and situation of the Asian monsoon onset.Only the Tibetan plateau reached an enough height,which can keep the modern circumstance of the East Asian monsoon,and the impact on the winter monsoon was more than the one on the summer monsoon.The South Asian monsoon was strengthened along with the uplift of Tibetan plateau.The plateau monsoon gradually developed in the course of the uplift of Tibetan plateau,which its degree of strength impacted the drought and flood of the plateau monsoon area.