Digital technology has accelerated the Digital transformation of service trade. Digital service trade has broken the time-space constraints of traditional trade, which is conducive to adjusting China's foreign trade structure, promoting the upgrading of domestic industrial structure, promoting high-quality economic development. Test the impact mechanism and path of digital service trade on high-quality economic development through a fixed effects model. The empirical results indicate that digital service trade has a promoting effect on high-quality economic development with a high degree of impact on the central and western regions. The impact of different types of digital service trade also varies. From the perspective of impact mechanism, digital service trade strengthens its impact through technological innovation, industrial structure upgrading and improvement of human capital level. Therefore, China promotes the modern industrial system and accelerates the development of productive services to promote high-quality economic development.