A 4-floor elevator simulation system was developed to simulate typical elevator failure and elevator trapped people events.The actual elevator controller system, PLC, sensor, stepper motor and related control circuit were used to realize the collaborative control of the elevator model and the physical cage respectively.The experiment results show that the system can be installed and operated in ordinary office space environment, and can simulate typical failures in elevator operation and daily work and a variety scene of elevator trapped people without destroying the elevator structure.The system provides an experimental and scientific research platform for elevator fault detection, elevator state anomaly experiment, elevator operation maintenance and training, and has certain reference significance for practical elevator improvement and new technology application.