Taking Qinzhuanggou Watershed in the dry upland to the north of the Weihe River for an example, terrain factor data and land use data were overlaid and extracted based on the map of the terrain, with the support of ArcGIS software. The relationship between land use distribution and terrain factors was studied by land distribution index. Results showed that there is a close relationship between spatial distribution of land types and the terrain data of elevation, gradient and gully density. The predominant area of farmland are 900~1100 m above sea level, 5°~25° slope and 0~4 km/km² gully density; the predominant area of garden plot, 800~1200 m above sea level, 0°~15° slope and 0~2 and 4~6 km/km² gully density; the predominant area of woodland, 1100~1250 m above sea level, 15° ~25° and >25° slope and 2~6 km/km² gully density; the advantages of bare land, 800~1000 and 1100~1200 m above sea level, >25° slope and 4~8 km/km² gully density; and the predominant area of rural residential land use, 900~1000 m above sea level, 0°~5° slope and 0~2 km/km² gully density.