How does opening high-speed railway affect the firms\' export product quality

• 1、Economics and Trade School,Hunan University, Changsha 410000

Abstract：In the context of the rapid development of China\'s transportation infrastructure construction and the continuous growth of export trade, for exploring whether opening high-speed railway affects the firms\' export product quality, this paper combines China\'s 270 cities HSR data, firm-level micro data and customs data from 2000 to 2013 and uses DID method to carry out a series of empirical studies.The results show that opening high-speed railway significantly improves the firms\' export product quality, and productivity, market competition, firms\' scale, and the introduction of foreign capital can also help promote product quality upgrades,while firms\' years, capital intensity, and financial constraints will inhibit firms\' product quality;After the robustness test, this research conclusion remains stable;The results of the mechanism test show that opening high-speed railway can significantly improve the firms\' export product quality through the two channels of" innovation-driven effect "and" cost-driven effect ";In addition, the impact of opening the high-speed railway on the product quality is different among the industry and product levels.

Keywords： International Trade Opening High-Speed Railway Firms\' Export Product Quality Innovation-driven Effect Cost-driven Effect