The waiting-area for through vehicles is an effective way which can increase the space resource utilization and traffic capacity of through approach, decrease the vehicle queue length in through lane and mitigate the traffic congestion at signalized intersection.The setting of criteria and pros and cons of the waiting-area for through vehicles at signalized intersection were discussed, the running characteristics of vehicles which go straight before and after the setting of waiting-area for through vehicles were elaborated.In order to solve the problem of the increase of fuel consumption and exhaust emission caused by the secondary start-stop after the setting of waiting-area, an integrated multi-objective optimization model for the time-space resource of waiting-area for through vehicles was proposed, considering the vehicle queue length, traffic capacity of through approach and average stop rate of vehicles.An efficiency analysis making use of the VISSIM simulation software shows that the proposed model can improve the traffic operation and environmental benefit of waiting-area for through vehicles via setting an appropriate length of waiting-area and choosing a coordinated control strategy for through phase.