Along with the wide application and popularization of the Internet of Things （IoT），the Internet of Vehicles （IoV） is also stepping in a period of rapid development with broad prospects and obvious trends. At the same time，the cybersecurity risks of IoV are particularly prominent，and the security situation is not optimistic. Based on the background of the IoV development and the security situation，this paper analyzes the security risk of terminal，data and business cloud platform of IoV，teases the current related work that has been carried out，puts forward the corresponding strategies to strengthen the security protection of IoV，and prospects the development of IoV cybersecurity in the future.