Based on the matching data of CSMAR database and China Customs database from 2009 to 2016, this paper identifies the impact of digital transformation on the adjustment of the scope of export products of enterprises. The results show that digital transformation has a significant role in promoting the increase of the scope of export products of enterprises. On the one hand, the improvement of digital transformation can promote the increase of R & D investment, the increase of patent output and the expansion of local market effect to enhance the scope of export products of enterprises. On the other hand, from reducing the internal and external transaction costs of enterprises to promote the expansion of the scope of export products, the impact of digital transformation on enterprises with high transaction costs is more significant. Therefore, this paper suggests that China should increase the construction of digital infrastructure, consolidate the foundation of industrial digitalization, deeply infiltrate the new generation of digital technologies such as big data, cloud computing and artificial intelligence into traditional industries, promote product innovation and industrial model reform, carry out R&D innovation with user value as the starting point, build a digital terminal system, and expand the scope of export products of enterprises.