This article is based on the following research background, ①the transformation necessity of the internationalization strategy philosophy under the trade war; ②the importance of enterprises entering the international market in all countries; ③postmodern consumption and production practices paying more and more attention to the project sharing; ④the innovation mode advocating cooperation and openness in resource sharing;⑤the urgency of study on new concepts such as the digital institutional environment and project sharing and the transformation of international strategy philosophy; ⑥the interaction complexity of all these concepts. First, this paper proposes and defines the concepts of digital institution environment and project sharing, then it studies the innovation mode suitable for digital system environment and the internationalization strategy philosophy, and it studies the logical relationship among digital institution environment, project sharing, enterprise innovation mode and enterprise internationalization strategy adjustment. Second, this paper constructs a conceptual model that how the digital institutional environment influence the internationalization strategy, and it studies the similarities and differences in the context of project sharing and enterprise innovation mode. Finally, combined with the enterprise innovation model, this paper puts forward the construction methods, construction procedures and value realization methods for various sharing platforms. It proposes suggestions for enterprise internationalization strategy actions, and in particular it gives a scientific judgment on the current development trend of internationalization strategy.