Based on the environmental economics theory and general system theory,the coupling model of land use benefits is established.This paper,taking Xi’an city as an example,discusses the relationship between socio-economic benefit and eco-environmental benefit of land use.The results show that the trend of coupling degree of land use benefits first rose and then came down in Xi’an from 1992 to 2008.The above trend changes like a parabola between 14.13° and 81.84°.The socio-economic benefit and eco-environmental benefit of land use developed from the state of less coordination to optimal coordination from 1992 to 1994.The coupling degree of land use benefits slowly increased at a higher level,the coercion and restricted effect between socio-economy and eco-environment appeared from 1995 to 2003.The relationship between socio-economic benefit and eco-environmental benefit of land use developed in a more coordinated direction from 2004 to 2008.In general,the socio-economic benefit and eco-environmental benefit of land use keep on developing in a coordinated way in Xi’an city.