Micromotor

The micromotor is characterized in that the micromotor comprises a motor body and a Hall assembly, the motor body comprises a first shell, a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft extend out of the two ends of the first shell respectively and extend in the first direction, and the first rotating shaft and the second rotating shaft rotate coaxially; the Hall assembly comprises a second shell, a Hall element plate and a Hall rotor, the Hall element plate and the Hall rotor are arranged in the second shell, the Hall rotor is rotatably arranged in the second shell, and the Hall rotor directly faces the Hall element plate; wherein the Hall rotor comprises a rotating shaft sleeve and magnetic steel, a through cavity extending in the first direction is formed in the rotating shaft sleeve, the magnetic steel is arranged in an opening in one end, close to the Hall element plate, of the through cavity, and an opening in the other end, away from the Hall