Structurally, information space is formed by physical elements such as region, time and form. It also integrates humanistic factors such as ethnicity, culture, and customs. This can promote information dissemination from "physical" and "social" dimensions. The paper holds that the interconnection mechanism of information space promotes the fusion and communication of physical space and virtual space, enriches the transmission path of information and the way of cognitive communication, and helps both parties to understand and identify with the content of information. Specifically, the paper analyzes the information space constructed by China International Import Expo under the double-dimensional effect, and how its interconnection mechanism effectively realizes the integration of information dissemination and communication, and achieves the ideal purpose of information communication in the process of dispelling the blocking influence caused by social factors and cultural domain.