The vibration motor is equipped with a group of adjustable eccentric blocks at both ends of the rotor shaft, and the excitation force is obtained by using the centrifugal force generated by the high-speed rotation of the shaft and eccentric block. The vibration frequency range of vibration motor is large. Only when the excitation power and power are properly matched can the mechanical noise be reduced. Vibration motors are classified according to starting and running mode and running speed classification According to the application occasion, it can be divided into ordinary vibration motor and explosion proof vibration motor. According to the installation structure, it can be divided into horizontal vibration motor and vertical vibration motor.