随着信息技术发展水平的增长，数字经济已经变成一个重要的命题，登上世界舞台。在数字化发展时代下，世界各国都在积极寻求贸易转型之道，将数字技术渗透于国际贸易的过程中，推动数字化交易的发展，降低贸易成本。我国的经济转型正处于关键时期，推动服务贸易高速发展，有助于我国在国际上取得更多话语权，对外展示良好的国际形象。我国积极落实关系协定的服务贸易领域市场开放承诺和相关规则，加深与成员国之间的服务贸易合作，实现贸易转型。在这样的趋势下，如何利用数字经济技术为服务贸易领域注入新活力，成为一个值得探究的问题。本文梳理了研究贸易成本和数字经济的相关文献，参考前人的做法，运用 Novy 的贸易成本测算方法，收集 RCEP 国家 2010 年至 2020 年的相关数据，运用熵增法计算各国数字经济发展指数。在前文基础上，建立面板数据，以服务贸易成本为被解释变量，数字经济发展指数为核心解释变量，对数字经济对服务贸易成本的影响进行实证分析。

With the growth of information technology development level, the digital economy has turned into an important proposition on the world stage. In the era of digital development, countries around the world are actively seeking ways to transform in international trade, penetrate digital technology into the process of international trade, promote the development of digital transactions and reduce trade costs. China's economic transformation is in a critical period, and promoting the high-speed development of trade in services will help our country to gain more discourse power in the international arena and display a good international image to the outside . China actively implements the market opening commitments and relevant rules in the field of trade in services under the Relationship Agreement, deepens the cooperation in trade in services with member countries, and realizes trade transformation. Under such a trend, how to utilize digital economy technology to inject new vitality into the field of trade in services has become an issue worth exploring.

In this tesis, we sort out the relevant literature on researching trade cost and digital economy, refer to the previous practice, apply Novy's trade cost measurement method, collect the relevant data of RCEP countries from 2010 to 2020, and use the entropy incremental method to calculate the index of digital economy development of each country. On the basis of the previous paper, panel data is established to empirically analyze the impact of digital economy on the cost of trade in services with the cost of trade in services as the explanatory variable and the digital economy development index as the core explanatory variable.