On the basis of continuous upgrade of community building，the Xunyang District of Jiujiang city broke through the geographical limitations，integrated the urban and rural resources，and finally found effective ways of resource-sharing and interactive co-building of urban and rural communities. Both the two sides enjoyed the win-win results of sharing in co-building and vice versa. This article contains three parts，introduced respectively the background and significance，measures and effects，experiences and thinkings in the development of Interactive Co-building of Urban and Rural Communities.