The land types, land productivity classification and land use evaluanon in Zhengjiagou catchment located in the north of loess plateau were discussed in this paper, Based on .the land properties, the suitability and limitations of land, the land use evaluation system is developed.The results show that there are serious soil erosion and desertification and extensive land degradation in this catchment because of irrational land use and improper managements, We believe that adjusting land-use construction, increasing soil fertility and planting trees and grasses are main measures to exploite efficiently the land resources, to raise land productivity and to improve ecological environment in this catchment.