Abstract: In the metropolis fringe area, as communications between urban and rural area are intensive, urban space develops rapidly and land use changes sharply. With the rapid urbanization, the effects of city on surrounding areas become more and more obvious. The economic communication between urban and rural area become more and more compact, and the interrelations between them are strengthened constantly. In some developed quasi-urbanization areas, the opportunity of realizing integration of urban and rural area is mature. As a case study, Shuangliu County is analyzed, which is a typical quasi-urbanization area, lying in the fringe area of Chengdu metropolis, and where many factors lead to its imbalance and circle—like spatial structure. Based on the concept of harmonious development of integration of urban and rural area, this paper analyzed the development characteristics of integration of urban and rural area in Shuangliu County, which can be come the base and gist to make harmonious development model of urban and rural integration. Based on the understanding of interrelated relationship and integration trend, it explored the harmonious development model of urban and rural integration in Shuangliu County, which is beneficial to the acceleration of urbanization and realizing the urban and rural integration.