The research of ultrasonic rhinestone hot fix machine shows that using ultrasonic to set the rhinestone has become more and more popular all over the world. The application of this technology can replace the flux, adhesives, fasteners or other mechanical fixing methods needed in the past production, thus improving the production efficiency and reducing the cost. The welding principle of the ultrasonic point drill is that the generator generates 20KHz (or 15KHz) high-voltage and high-frequency signals, which are converted into high-frequency mechanical vibration through the energy conversion system. The signals are added to the work piece of plastic products. The temperature of the transfer point to the interface increases through friction between the work piece surface and the internal molecules. When the temperature reaches the work piece book, the temperature of the transmission point increases. At the melting point of the body, the work piece interface melts rapidly, and then fills in the gap between the interfaces. When the vibration stops, the workpiece is cooled and shaped under a certain pressure at the same time, the perfect welding can be achieved.