Digital trade refers to the application of digital technology in the traditional trade method, and is evaluated to play a big role in improving the traditional trade process and improving efficiency. In particular, the introduction and use of e-invoicing is evaluated to contribute to the promotion of international trade by minimizing trade transaction costs between the parties to the transaction. The introduction and use of e-invoicing is being discussed in various ways in multilateral, bilateral, and multilateral trade agreements. This study analyzed the effect of innovation and economic feasibility, which are external factors of a company, on the intention to introduce and use e-invoicing systems and use e-invoicing by domestic export companies using the technology acceptance model. In the future, it is judged that the use of e-invoicing by Korean export companies will contribute to innovating and optimizing the global trade process, and it was suggested that it is necessary to actively introduce an e-invoicing system to secure the external competitiveness of Korean export companies.