At present, face recognition technology generally exists the problem of low recognition accuracy and poor anti-interference ability. For this reason, an improved technology of freeway network monitoring and face recognition based on provincial road network is designed. The purpose of the design of the expressway network monitoring system and the functions needed are introduced. The overall structure of system is given, which mainly comprises a control center and field terminal equipment, terminal equipment field by provincial road network and control center equipment for communication, to complete the monitoring information collection and dissemination; through perspective projection stage and camera calibration stage pretreatment on provincial road network video, building illumination optimization to achieve face recognition technical compensation model and facial feature detection model. The experimental results show that the proposed method has high recognition accuracy, fast recognition processing speed and strong anti-interference ability compared with the traditional method.