The temperature of hot asphalt mixture and environment has a significant effect on the quality of asphalt pavement while paving.Influenced by various kinds of factors, the temperature of the hot asphalt mixture and environment are complicate and changeable while paving.The temperature of different space and time around asphalt pavement are measured while paving hot asphalt mixture on Hou-Yun expressway.The space-time distribution characteristics of temperature field while paving through analysis are given.