Developing information industry is an important step for industrial structure adjustment and upgrading in Chongqing’s "Five Year Plan" and its objective is to develop information industry into the first pillar industry of Chongqing, which can thoroughly change the situation of Chongqing’s industries mainly depending on traditional auto and motorcycle industry with high energy consumption. This paper firstly uses cointegration test to elaborate that the development of information industry is the motion to push forward national economy development, then uses ridge regression method to interpret the total development level of this industry, and finally concludes the great influence of the development of information industry in Chongqing on national economy and that the development for information industry is needed to be improved.