This study is to clear the patterns of grazing behavior of livestock in settlement of Inner Mongolia by fitting GPS data logger on sheep. The grazing behavior of sheep was affected by several impacts, and in this study it was cleared that landform (slope, aspect), distance to water place, fence and pasture area were notable factor to influence grazing behavior. Fence and settlement of nomad were beginning from 1980s in Inner Mongolia. With the emergence of fences, the pasture land was divided into small parts. Each part was habited by settled nomad family and the same area was used all year by nomads and livestock. From the daily tracking of the sheep, it was possible to say that the overgrazing in crowded pastures would accelerate the land degradation and desertification in Inner Mongolia, one of the largest remaining grassland ecosystems in the world which covers an area of up to 791,000 km²(Li et al., 2000).