[Objective] The effects of grain for green project on soil quality was explored in order to provide theoretical bases for revegetation and reconstruction of abandoned farmland in semi-arid loess hilly region.[Methods] Comprehensive evaluation of soil physio-chemical factors sampled in different revegetated farmlands was conducted by AHP method in the demonstration area at Zhongzhuang village of Pengyang County

Ningxia Hui Autonomous Region of loess hilly area.[Results] Soil moisture was the main factor that affected soil environment

its weighted value reached 0.210. Followed by soil total porosity and soil organic matter content

their weighted values reached 0.136 and 0.108

respectively. Meanwhile

soil capillary capacity

soil available nitrogen content and soil urease content had also played very important roles on the soil environment

their weighted values were 0.085

0.071 and 0.064 respectively.[Conclusion] Through comprehensive evaluation on the environmental impacts in terms of soil chemical properties

physical properties and biological activity

to some degree

woodland

terraces

artificial and natural grassland have been improved regarding to soil environmental quality. Among which

terraced field was observed been improved as the greatest type.