Abstract:At the moment of comprehensively promoting the construction of ecological civilization, China's arable land protection work has entered a new era of “three-in-one” protection of quantity, quality and ecology. The promotion of high-standard farmland construction with the improvement of cultivated land quality is of great significance to ecological protection and restoration. In order to provide the technical services for planning layout and site selection of the high standard farmland construction project in Meihekou City of Jilin Province, combined with agricultural land renewal, land use status survey, soil survey report and field survey sampling data, from the natural endowment, infrastructure status, spatial characteristics and ecological environment quality of cultivated land, 14 indicators were selected which included plough layer texture, drainage condition, field size and soil comprehensive pollution index, and the Bayesian probability model was used to evaluate the suitability of high standard farmland construction. The results showed that in the construction of high standard farmland, the slope of cultivated land, depth of the barrier layer, organic matter content, thickness of the effective soil layer, accessibility of the field road, soil microbial carbon and soil comprehensive pollution index had a great influence on the suitability of high-standard farmland construction. According to the posterior probability results, the cultivated land in Meihekou City was divided into four different levels of construction suitability areas. In the future, the construction of high-standard farmland should first be carried out in the priority construction area. At the same time, the reserve construction area could provide a reliable guarantee. Under the good conditions of cultivated land background quality and infrastructure, the indicators such as soil microbial biomass carbon, biological abundance coefficient and soil comprehensive pollution index could be introduced for further dividing construction suitability from the perspective of ecological protection. This paper provide scientific bases in theoretical thinking and practical innovation of ecological civilization construction to realize the simultaneous improvement of ecological service functions and production functions and the effective mode of target integration.