With the improvement of people living standards and the increasingly rapid pace of modern life, cars have almost become a necessary travel tool for every family. What follows is a sharp increase in the number of traffic accidents. The latest traffic regulations of 2018 show that there is always a contradiction between people and cars. In the face of many intersections, uninterrupted time, only rely on the traffic polices to maintain order at intersections, often unable to do their best. Through intelligent monitoring based on the Internet of things, the system can automatically monitor and warn passers-by running red light, combine with voice prompt, intelligently change the color of zebra crossing, and so on. The standard management of pedestrian crossing is realized without artificial intervention, the phenomenon of pedestrian running through red light is reduced, the probability of traffic accident is reduced, and a safe and harmonious urban traffic environment is constructed.