In order to achieve low emissions and short delays through the multi-objective optimization control of traffic signals，first，the trajectory of the vehicle is described，and the vehicle emissions are calculated based on the vehicular specific power ( VSP) ． Then，the relationship between emissions and delays is quantified by means of the regression analysis，and a traffic signal control model for reducing emissions and shortening delays is constructed to optimize the cycle time and the green time of the signal control intersection． Thus，low emissions and short delays are realized through the multi-objective intelligent control of traffic signals． Finally，the constructed model is verified by a VISSIM simulation and on the basis of a survey about a typical intersection in the city of Changchun． Comparative analysis of the results before and after the optimization shows that the delays are shortened by about 10. 54% and the emissions are reduced by 13. 41%，which proves that the proposed control technology is effective．