A large number of automotive manufacturers are devoted to the development of autonomous driving vehicles in recent years. Similarly, many researches have also been dedicated to the development of autonomous driving techniques and vehicles. An autonomous driving system typically comprises four main technologies: environment perception, localization, path planning, and motion control. By analyzing the data collected from different onboard sensors, the system has the ability to understand the environment surrounding the host vehicle. In this article, recent development of environment perception technology is discussed. Furthermore, some applications of environment perception based on visual sensors, range/distance sensors, and sensor fusion technologies are also included.