In recent years，with the promotion of national strategies of Made in China 2025，Internet Plus，and Deepening the Integration of the Manufacturing Industry and the Internet，and with the development of automobile，electronics，information and communication technology，the development of internet of vehicle （IoV） in China is very rapid. At the same time，the developing of IoV is facing huge security challenges. As the foundation and guarantee of the development of IoV，security has become a hot spot and difficult point in the current research. In this context，this paper firstly reviews the current IoV security situation，and analyzes the IoV security risks and challenges，then summarizes the key technologies and security solutions on IoV security protection，and finally puts forward the countermeasures and suggestions for the IoV development.