Auto and motorcycle industry is the first pillar industry of Chongqing. The auto products have large dependence on foreign products and technologies, however, motorcycle products of Chongqing have large dependence on foreign market. As a result, the analysis of exchange rate change has real significance to auto and motorcycle industry of Chongqing. This paper introduces the import and export situation of auto and motorcycle industry of Chongqing, and analyzes the influence of the reevaluation of Renminbi on the auto and motorcycle industry of Chongqing and its cause and reality.