The complex road traffic environment has driven requirements for intelligent traffic management systems to be intelligent, comprehensive, accurate, and real-time. To meet this requirement, we must rely on reliable real-time and accurate detection data, including big data, geomagnetic , Video and radar detection methods provide multi-mode data, and the technical advantages of millimeter wave radar can play an important application in the field of intelligent transportation. Millimeter wave radar is an important vehicle detection method, which can collect objective and effective road traffic information, obtain basic data such as traffic flow, vehicle speed, road occupancy, vehicle spacing, vehicle type, etc., so as to achieve targeted monitoring, control, Intelligent means such as analysis, decision-making, scheduling and grooming are important components of the intelligent transportation system in modern society.