Ultrasonic atomization powder making technology can be divided into contact atomization and non-contact atomization. With the help of high-frequency sound wave vibration energy, the metal liquid flow is accurately broken and dispersed into fine mist droplets, and then solidified into powder in a specific cooling environment. The contact atomization currently used is suitable for metal materials with low melting points (≦1000℃), such as magnesium, aluminum, tin, silver, indium, lead, etc.