In order to determine the asphalt mixture paving temperature field under certain conditions, the one-dimensional unsteady state simulation model of paving temperature field had been established. The simulation model had adopted the numerical solution of finite difference implicit format, using static values, air temperature, wind speed, solar radiation, sprinkler quantity, the initial temperature field of underlying materials and thermophysical parameters of underlying materials, selecting the surface heat transfer coefficient, effective radiation, thermal conductivity and specific heat capacity of paving materials, which varied with the time step, choosing densities of paving material per discontinuously changing during the first three times of compactions. Thus, the solution of one-dimensional unsteady paving temperature field had been transformed into solving temperature value of each time interval at any position along the thickness of the spreading layer with mathematical tool. Results show that the accuracy and dependability of the model have been confirmed.