WIFI bus is an important part of smart city. By installing a 4G industrial router in the car, the signal transmitted by the 3G/4G mobile communication base station on the way is converted into a stable network signal (such as Wi-Fi signal), which can easily meet the needs of passengers in the car. It can also fully support all the bus company's scheduling, scheduling, statistical analysis and other business needs; in addition, it can support the image transmission of the video surveillance system on the bus. Once the vehicle has an accident or emergency, the video surveillance system will start immediately, and the video will be launched. Transfer to the rear console for easy platform center emergency processing and scheduling.