With the continuous development of society, the elevator becomes more and more inseparable from us. The number of elevators is constantly increasing, and how to make elevators operate more efficiently has become an urgent problem. Based on the CAN bus and the ant colony algorithm, the thesis integrates the floors of a building, the total number of elevators, waiting time for the passengers and the loading of an elevator as well as other important indicators, so the paper puts forward a new elevator group control system (EGCS) model to lay a good foundation for further study on EGCS.