At present，the world economy is in the recovery period and moving to a higher stage，the engine of economic growth will shift from developed economies to emerging market ones. China's economy has shifted from a high speed growth stage to a high quality development stage. It is at the critical stage of changing the development mode，optimizing the economic structure and transforming the increasing motivation. Chengdu Plain Economic Zone presents the characteristics of speed change，structural optimization and power transformation. Economic development still faces many difficulties and challenges With the deepening of the structural reform of supply-side，the economy of Chengdu Plain Economic Zone will maintain a steady growth in 2018..