Before the gap enlarging among the areas in the western region, and on the basis of the theory and model of development pole, this paper studies the way of optimizing of industry structure of Chongqing in order to accelerate the rate of progress of the development of the western region, and to advance its economy power during it. By indexing the system's construction and analysing the demonstration, we consider that the instrument manufacturing sector, building, transport equipment manufacturing, general machinery, finance and insurance, and service industry of IT should be cultivated and supported as the cut-in industries in Chongqing.