Combining Chengdu-Chongqing Economic Region and Guanzhong Economic Region to build West-China Delta Region is most important in the new round of the western development. That is consistent with the national development strategies and the regional economic development laws. There are many good conditions for the interregional cooperation, but also some difficulties, such as geographic isolation, different economic flowing tendencies, cultural differences, and the competition between local governments. So that this article suggests speeding up the infrastructures and logistics networks construction, and forming an overall metropolitan area.