Currently the air pollution in Chongqing is mainly caused from burning coal and there is a decreasing trend because of the effective treatment. However, due to the urban development and the inflating quantity of automobile in Chongqing, the amount of the traffic exhaust is increasing gradually. To take measures against the traffic exhaust in advance based on the air pollution trend can reduce the difficulty and the cost of controlling the air pollution in Chongqing in the future. This paper analyzes the factors causing the traffic exhaust pollution in Chongqing, and puts forwards some control measures.