AbstractIn order to evaluate the workability of warm mixture asphalt objectively, workability testing instrument of the asphalt mixture had been adopted to evaluate the workability of Sasobit warm mixture asphalt. At first, the feasibility of the machine was analyzed with asphalt mortar. Then the workability of Sasobit warm mixture asphalt was determined in different temperature and frequency, and contrasted with hot mixture asphalt. The results show that when the mixing temperature of Sasobit warm mixture asphalt was reduced 30°Cthe workability of Sasobit warm mixture asphalt is the same with hot mixture asphalt.