Considering the truth that export volume is an important index to show the industrial international competitiveness of a country, it is vital to focus on the factors that restrict auto exports and find out ways to promote international competiveness of China’s auto industry. Using the panel data of China’s public automotive companies, this paper researches how technological innovation influences auto export by multiple regression analysis and compares the results of different index or object. The conclusions of the paper include: technological innovation personnel input intensity and capital investment has significant positive influence on passenger vehicle’s export; none of the innovation index has significant positive influence on commercial vehicle’s export.