In order to implement the development concept of“innovation, coordination, greenness, openness and sharing”firmly and promote the social sharing of archives information, it is one of the urgent task for the national archives profession to follow the trend of informatization development under the objective background of“Internet + Archives”. Because of archives’special attributes, the issue of sharing borders restricts the process of informatization. This article discusses several border issues in the sharing of archives information and proposes relevant strategies for sharing archives resources across boundaries so as to contribute a little to the progress of archives informatization.