Abstract:Salawusu area of Nei Monggol, is the famous ruins of “Hetao man” and their culture. It is also the native haunt of Salawusu Fauna and the typical site of the late Pleistocene in northern China. By densely sampling and carefully analysing, the authors worked out a beautiful and complete pollen-spore diagram of the Salawusu section, which records in detail the proccess of the vegetational development and the climatic changes of this region since Last Glacial periode, about 60 ka B.P. Accordingly, the last glacial period may be divided into three substages: Early, middle and late substage, corresponding to the pollen-spore zones: Ⅰ,Ⅱ, and Ⅲ. Substages are divided into cold stadials and relative warmmer tnterstadials, corresponding to subzones of pollenspore zones. This scheme can be well correlated with that of other regions in China, in Europe, in America and the results of the oxygen isotopic research in deep sea, all over the world.