2013年，我国提出“一带一路”政策，加强与沿线国家的基础设施建设，促进贸易互通。本文利用2013-2016年wind数据库，探究在“一带一路”宏观政策背景之下，对该政策敏感程度高的企业的特征，以及融资约束对于受政策影响企业出口的决策和规模的影响。研究结果表明，在“一带一路”政策背景下，融资约束对相关企业出口的行为有显著影响，其中内源融资与银行贷款融资对企业出口的制约作用最为显著。受到融资约束越小的企业，越有可能有产品出口，且出口规模更大。

In 2013, China proposed the “Belt and Road” policy to strengthen infrastructure construction with countries along the route and promote trade exchange. This paper uses the 2013-2016 wind database to explore the characteristics of companies with high sensitivity to policies under the macroeconomic policy of “Belt and Road” and the impact of financing constraints on the decision-making and scale of export. The research results show that under the background of “Belt and Road” policy, financing constraints have a significant impact on the behavior of corporate exports. Among them, internal financing and bank loan financing have the most significant restrictive effect on corporate exports. Enterprises that are less constrained by financing are more likely to export and the scale of exports is greater.