The Internet is a new medium for disseminating information. The emergence of online information dissemination tools has overcome the limitations of time and space in the early information dissemination tools, and online information dissemination has extraordinary attractiveness in all walks of life. Online communication is the dissemination of information, including news, knowledge, and other information, through computer networks. The benefits of high speed, high volume, interactivity, immediacy, vividness, openness, ease of discovery, and online communication over time, across different fields and media, enable people to appreciate online media in a new way. The Internet is rapidly becoming the new preferred means of communication due to its unparalleled advantages. The research on cross-cultural communication on the Internet is based on the globalization of economy, the globalization of information dissemination, and the development of cultural marketing. This paper has conducted a research experiment on the new path of stranger interaction platform and network cross-cultural communication in the all-media era. The experimental data show that the paths of cultural dissemination account for 39% of introductions by others and 26% of social platforms such as WeChat. Promotional information on other platforms accounted for 17%, app stores accounted for 12%, and others accounted for 6%. It can be seen that the introduction and recommendation of others are the main way of cross-cultural communication. After studying the interactive platform for strangers in the all-media era, we learned from the Internet that cross-cultural communication has gradually become the main way.