Aiming at the requirements of traffic control at the busy intersection, this project designs a traffic light control simulation system based on KingView and PLC, which has also has the tidal lane control function besides the basic traffic control function.Through the co-simulation of Mitsubishi PLC and KingView, the project realizes the traffic control of intersection traffic and pedestrians.The real-time online monitoring is realized by using the simulation software of KingView to display the monitoring screen in real time. The project finally realizes the four-way intersection traffic light control system with tidal lane control function.