Digital transformation of logistics enterprises is an important choice to deal with the national strategy of digital economy, but the impact of digital transformation on financial performance has not been united. This thesis will take information asymmetry theory, resource base view theory and other theories as the basis of research, and put forward research hypotheses. It will also analyse the impact of digital transformation of logistics enterprises on financial performance and the impact mechanism by selecting A-share logistics industry listed companies in Shanghai and Shenzhen from 2012 to 2022 as the research samples for the fixed effect test, and adding financing constraint variables at the same time. The research results show that the digital transformation of logistics enterprises has a positive impact on financial performance, in which financing constraints play a part of the mediating effect. That is, the digital transformation of logistics enterprises can either directly promote the financial performance of enterprises or indirectly promote the financial performance by alleviating financing constraints. Finally, suggestions are made for the research findings, which provide useful references for the digital transformation practice of logistics enterprises.