Land use change is one of the driving forces of land cover change and has an important impact on the structure and function of the desert-oasis ecosystems. Taking Urad Rear Banner and Urad Middle Banner （two counties） located in the northern part of Yin Mountain as well as Wuyuan county and Hanggin Rear Banner right to the south of Yin mountains as research region， and the statistical data in this region， the relation among the annual precipitation， population， livestock number， and land use cover have been analyzed， with the interpretation data of the satellite images in 1987 and 2015. The results showed that cropland was increased， grassland decreased， and the planted woodland decreased too and there are significant relationships between population and livestock number and cropland， and the relationship between the three before with annual precipitation is not significant， the best fitting equations are respectively y=1.2407x-235428 and y=2613.3e1E-05x. This research could supply a solid data and theoretical support to the sustainable land use and high-quality development of the Hetao section of the Yellow River in Inner-Mongolia.

Keywords： land use ; Hetao Plain ; cultivated land change ; curve fitting