随着数字服务贸易规模的扩大，以信息安全问题为主的数字化弊端逐渐暴露，世界各国纷纷制定数字服务贸易限制性措施以构建本国的数字服务贸易壁垒。本文旨在研究数字服务贸易壁垒的抑制效应，采用2014～2019年全球32个出口国与46个进口国的面板数据，以数字服务贸易限制性指数和数字服务贸易监管政策异质性指数作为贸易壁垒的代理变量，检验贸易壁垒对双边贸易流量的影响。结果发现，数字服务贸易壁垒显著抑制了双边贸易的发展；贸易国之间监管措施的异质性也会产生贸易抑制效应，这种效应在发达国家和发展中国家之间、区域集团内的国家和区域集团外的国家之间更为明显。最后，本文认为各国应积极探索降低数字服务贸易壁垒的途径，加强国家间的沟通与谈判，深化协调更大范围、更多领域内数字服务贸易政策上的统一性，建立标准化的数字服务贸易量化框架，进一步推动数字服务贸易的发展。
With the expansion of the scale of digital service trade，the digital disadvantages focusing on information security are gradually exposed. Countries all over the world have formulated restrictions on digital service trade to build their own digital trade barriers. This paper aims to study the trade inhibitory effect of digital trade barriers. Using the panel data of 32 exporting countries and 46 importing countries in the world from 2014 to 2019，this paper takes digital services trade restrictiveness index and digital services trade regulatory policy heterogeneity index as proxy variables of trade barriers to test the impact of trade barriers on bilateral trade flows. The results show that digital service trade barriers significantly inhibit the development of bilateral trade；The heterogeneity of regulatory measures among trading countries will also produce trade inhibitory effect，which is more obvious between developed and developing countries，countries within regional groups and countries outside regional groups. Finally，this paper believes that all countries should actively explore ways to reduce barriers to digital service trade，strengthen communication and negotiation among countries，deepen coordination on the unity of digital Service trade policies in a wider range and more fields，establish a standardized quantitative framework of digital service trade，and further promote the development of digital service trade.
