This study explores the impact mechanism of information sharing level on inter-firm value co-creation. The author introduces the concept of inter-firm value co-creation as a dependent variable and sets the information sharing level as an independent variable. Among them, the information sharing level is divided into two measurement dimensions: information technology level and information exchange level. At the same time, synergy effect is included as an intermediary variable. It is predicted that the information sharing level will have a positive impact on inter-firm value co-creation, and the synergy effect will play a role as mediator.