The "Visual Three phase Asynchronous Motor Principle Teaching Instrument" designed specifically for vocational colleges, universities, and enterprise training centers presents the entire process of "rotating magnetic field induced current electromagnetic torque asynchronous operation" through a transparent shell, detachable rotor, real-time light indication, and low-noise operation, helping students understand the motor principle in 3 minutes. Experimental project: Observation of phase relationship of three-phase AC power; The correspondence between the direction of the rotating magnetic field and the phase sequence; Cutting the magnetic induction line of the rotor conductor generates induced current (right-hand rule); Measurement of slip rate and depiction of mechanical characteristic curves.