In the process of urbanization in Sichuan province，rural areas provided indispensable natural ecological guarantee，factor guarantee and market guarantee for urban development. However，with the rapid development of the urban economy and society，the new dual structure appeared，which caused a series of social problems and brought many risks to the sustainable development of the city. In new stage，Sichuan province must adjust the strategy of urban and rural developmentcmd，build a community of urban and rural values by de-labeling of citizen development，de-administration of factor flow，de-comparison of space construction，de-borderization of urban and rural civilization，and de-differentiation of environmental security.