With the rapid development of China's economy, people's lives are becoming more and more affluent, and cars are gradually entering each household, but the relative traffic road is more and more crowded, and the traditional traffic detection has been unable to meet the current requirements. Due to the continuous progress of science and technology, there are new vehicle detection technology, and the traditional vehicle detection technology is also constantly improved. This paper introduces the new detection technology and vehicle detector, and analyzes the application of modern traffic monitoring technology in traffic.