Abstract:Abstract: Taking innovation as driving force and urban agglomeration as a carrier is a significant development strategy for the next period of China. To this end, the central government has decided to promote the construction of Chengdu-Chongqing urban agglomeration located in the relatively backward western region to form an overall layout corresponding to the development of the three eastern urban agglomerations. This article takes the developing Chengdu-Chongqing urban agglomeration and the Pearl River Delta urban agglomeration,the most mature urban agglomeration in China, as the research object, the innovation joint patent between cities as analysis variables and uses social network analysis to compare internal spatial organization of the two urban agglomerations and the network relationship among the nodes from the prospective of the overall characteristics of innovation network, the node network status and the subgroup relationship. On this basis, the author put forward some suggestions for the innovative development of Chengdu-Chongqing urban agglomeration.