Since 2021, the Starlink of SpaceX, an American space exploration company, has entered the stage of rapid deployment. It was put into use in the Russian-Ukrainian conflict that broke out in February 2022, and became Ukrain’s information lifeline, playing an extremely important role in diplomatic propaganda, daily civilian use and military operations. From the practical application analysis of Starlink, the satellite Internet has become an important strategic resource from information channel, which extends the real battlefield to cyberspace, and its deployment is related to many factors such as politics, commerce and military affairs.