The ultrasonic sewing machine is composed of a 35K ultrasonic longitudinal vibration transducer, a first stage amplitude rod, a disc-shaped emitter, a second stage amplitude rod, and a dedicated driving power supply. Its working principle is that the ultrasonic driving power supply converts the mains electricity into high-frequency and high-voltage AC current, which is transmitted to the ultrasonic transducer to drive the surface frequency vibration of the disk. This device has the characteristics of not affecting the operation of the original equipment, easy installation and use, small size, and low energy consumption.