The vigorous development of digital economy promotes the growth of our cultural products export trade. This paper carries out research according to the basic idea of “analysis of the development status-analysis of influence mechanism-discussion on development countermeasures”. Firstly，it analyzes the scale，structure，market share and change trend of the export trade of cultural products between China and countries along the Belt and Road. Secondly，it calculates the development level and opening degree of digital economy between China and countries along the “Belt and Road”，and analyzes its characteristics and causes；Furthermore，the paper explains the influence mechanism of digital economy on the export trade of Chinese cultural products，analyzes the promotion effect from the supply side，the demand side and the circulation side，and explains the inhibiting effect from the digital trade barrier. Finally，based on the results of the study，countermeasures are proposed：firstly，to strengthen the construction of digital infrastructure and platforms in countries along the Belt and Road；secondly，to implement differentiated policies for countries with different degrees of digital economy development along the Belt and Road；thirdly，to actively promote the deep integration of cultural industry and digital economy；and fourthly，to actively promote the liberalisation and facilitation of digital trade in countries along the Belt and Road.