As a municipality and an important western strategic fulcrum of the "Belt and Road", Chongqing has a position that cannot be ignored. With the deepening of China's urbanization process and economic globalization, the state has established an international metropolis as the development planning goal of Chongqing. Therefore, it is necessary to accurately measure the urban competitiveness of Chongqing City in order to adapt to the new development requirements. Based on the analysis of the theoretical path of Chongqing's construction of an international metropolis, this paper draws on the reliable evaluation index system of urban competitiveness, using Tokyo, Hong Kong, Beijing, Shanghai, Xi'an and Chengdu as comparative samples, using principal component analysis. Chongqing's current development level has been measured, and based on this, the development situation of Chongqing City is judged and proposed to build an international metropolis.