Abstract: Boundary adjustment, as an important part of integrated optimization, is the most urgent problem in the research of nature reserves system.There are many types of nature reserves system in China, and the purpose of establishing each type of natural protected areas is different, so the situation is very complicated.Some dogmatism in the process of implementation brings new challenges to integration and optimization.Wetland park, as one of the important types of protected land system, bears the functions of maintaining the ecosystem and providing recreation, while terraced wetland, as a special form of constructed wetland, is still in the preliminary exploration stage of boundary optimization.In this paper, yunhe Terrace National Wetland Park is taken as an example to study and summarize the problems existing in the wetland park.Based on the current red line scope, the comprehensive value evaluation of scenic resources is carried out to scientifically solve the conflicts and historical problems of the nature reserves system, and the boundary adjustment scheme of the wetland park is discussed.