Qinghai-Tibet Plateau uplift has caused great changes in Asian and global climate.Planetary wind system was changed and monsoon effect appeared around 22 Ma B.P.in East Asia;The monsoon effect of East Asia became stronger,aridity and desertification was intensified,widely spreading Aeolian dust began to accumulate in the Chinese Loess Plateau;The global climate change was droved and intensified by the plateau uplift since 3.6 Ma B P;The monsoon effect of Asian present-day climate was increasingly intensified since 1.2 Ma B P.Since Quaternary,the uplift and structure deformation taken place in the Chinese Loess Plateau and caused geological hazard and soil erosion due to the Qinghai-Tibet Plateau uplift.And the uplift of Loess Plateau induced gravitational erosion,backing up erosion and water erosion;The structure deformation resulted in loess collapse and landslide;The soil erosion is most intense in great tectonic deformation zones,active fault zones and seismic zones.