This paper presents a method for identifying a practical dynamic modulus testing procedure. The currently well adopted method of calculating the dynamic method is discussed and a more fundamental dynamic modulus calculation method is proposed in this research. A comprehensive shakedown test was performed the dynamic modulus test on one asphalt mixture. The analysis results show no permanent damage was found on tested specimens for all three test temperatures. Comparison of the master curves built by different temperature and frequency combination shakedowns the redundant test temperature and frequency. A more practical dynamic modulus test procedure is developed using this shakedown method. This research shows that three test temperatures, 4.4, 21.1 and 37.8°C, and six frequencies, 25, 10, 5, 1, 0.5 and 0.1Hz are adequate to build a smooth master curve for asphalt mixtures.