Abstract: The northwest region in Liaoning Province, covering Zhangwu, Kangping and Faku counties, suffers serious land desertification, which involves inland desertification and river bank desertification. Study on the current situation of the desertification in Northwestern Liaoning shows that the natural factors for the desertification include landform, stratum and lithology, meteorological and hydrological conditions, while the human factors involve overload pasture and improperly cultivation. The countermeasures to prevent and control the desertification are returning farmland to forest and grassland, scientifically controlling the sand and appropriate emigration.