Abstract: This paper is based on the plateau monsoon index and the plateau vortex data set,using statistical methods such as wavelet analysis to the climate characteristics of plateau monsoon and plateau low vortex has carried on the statistical analysis,and explore the relationship between the two,the main results are:(1) the plateau monsoon is strong in summer and weak in winter,the quasi-four-year and quasi-six-year periodic oscillation characteristics of plateau monsoon are very obvious.(2) in the past 30 years,the average annual number of plateau vortex was 64.2,51.2 of which were warm plateau vortex.The intensity of the plateau vortex is normally distributed in the seasons,and the frequency of the plateau vortex has obvious periodic oscillation characteristics in the seasons.(3) the periodic oscillation characteristics of the plateau monsoon have a certain correlation with the climatic characteristics of the plateau vortex on the seasonal scale and inter-annual scale,and the quasi-4-year and quasi-6-year periodic oscillation characteristics are very obvious.According to the correlation probability statistics,the establishment time and intensity of the plateau monsoon are positively or negatively correlated with the climatic characteristics of the plateau vortex.