In order to implement the coordination control between sub-regions with different signal cycles,the idea of coordination control between intersections with different signal cycles in a large period is proposed.Then,by ana- lyzing the traffic arrival law between intersections with different signal cycles,a delay model based on the traffic wave theory is established,and an offset optimization method based on the minimum delay is proposed.Finally,by taking two signalized intersections with different cycle lengths as the examples,a VISSIM simulation is performed to analyze the effect of coordination control in a comparative way.Simulated results show that,after the coordination control,the average vehicle delay and the average number of stops decrease by 13. 60% and 6. 43%,respectively,which means that the proposed method is effective.This research provides a novel idea as well as a method for the coordination control between sub-regions with different signal cycles.