Phase change materials were chosen to fit the thermal environment of the road. Phase change asphalt was made by three kinds of import modes.The composite phase change materials were chosen by comparing the performance of different materials. Latent heat asphalt mixture was made by replacing powder and fine aggregate with composite phase change materials. Its controlling temperature effect was tested by temperature monitor system. Results show that comparing to asphalt mixture, latent heat asphalt mixture can reduce the temperature by 8 to 10℃. Therefore, the latent heat asphalt mixture has a good effect on adjusting the road temperature.