Based on the digital service trade data of major OECD countries and China from 2009 to 2021, according to the calculation of their digital service trade Market Share, Trade Competitiveness Index, and Revealed Comparative Advantage Index, thoroughly analyzing the overall competitiveness and sub industry competitiveness of digital service trade in these countries, the influencing factors of digital service trade competitiveness were analyzed using a bidirectional fixed effects model. Research has shown that human capital, economic development level, internet development scale, and research and development level in the service industry in these countries have a significant positive impact on the competitiveness of digital service trade, while foreign direct investment has an insignificant inhibitory effect. In this regard, China should base itself on the advantages of traditional trade in goods and drive digital service trade to "overtake on curves". Increase investment in digital technology research and development, and utilize technology to empower efficiency changes in the digital service trade industry; Strengthen the construction of digital infrastructure and consolidate the foundation for the development of digital service trade. Increase talent cultivation in the digital service industry and strengthen intellectual support for the industry.