Supported by remote sensing and GIS, this paper calculates the ecotone between agriculture and animal husbandry and water and wind erosion interleaving in term of expert knowledge, expounding their spatial distribution characteristics. The results show that water and wind erosion interleaving mainly distributes in Daxinanling Yinshan mountain and Qinling Qilian mountain. Ecotone between agriculture and animal husbandry mainly distributes in border on Liaoning and Inner Mongolia, north Shanxi, Shannxi,and east Gansu province. There exists largely difference from these zones spatial distribution and two ecology fragility zones in north China. This distribution has bad impact on environment. Finally, it is suggested some countermeasures to treat from the ecological rehabilitation.