Ultrasonic Motor (USM) is a new kind of motor which is being developed in the recent twenty years. Transient characteristic test of USM is the base of transient control. Based on virtual instrumentation, hardware trigger circuit, software filter, data acquisition, test and analysis system was designed, the errors caused by hardware and software has been overcome, it realized precise measurement for the parameters such as Speed curve and response time of start-up and turn-off. The experiment proved that USM is of millisecond response times, and the system is simple, practical and feasible.