By taking a peasant household in Duicha Village,Mizhi County of Shaanxi Province as an study object,eco no mic efficiency,ecological benefits,and social efficiency from the "quaternity”mo de of ecolo gy,agriculture,circulatio n,and economy are analyzed.Promoting the methane is found to be the link of ecological agriculture circulation economy.The measure is of benefit to solve some problems existed in agricultural production,such as low agricultural efficiency low farmer income,and environmental pollution caused by long-term planting and cultivation separation and energy use and environmental protection separation.The study may provide a reference for the development of countryside ecological agriculture circulation economy.