The invention relates to a three-phase asynchronous motor, in particular to a pulse speed adjusting type wound rotor asynchronous motor. The problem that an existing three-phase asynchronous motor is complex in speed adjusting process, and speed adjusting is not smooth is solved. The pulse speed adjusting type wound rotor asynchronous motor comprises a stator iron core, a rotor iron core, a stator winding wound on the stator iron core, a rotor winding wound on the rotor iron core, a first capacitor, a second capacitor, a third capacitor, a first carbon brush, a second carbon brush, a third carbon brush, a first three-phase alternating current contactor, a second three-phase alternating current contactor, an electronic device with power capable of being shut down and a three-phase rectifier bridge composed of a first diode, a second diode, a third diode, a fourth diode, a fifth diode and a sixth diode. The stator winding comprises an A-phase first stator winding, an A-phase second stator winding, a B-phase first stator winding, a B-phase second stator winding, a C-phase first stator winding and a C-phase second stator winding. The rotor winding comprises an A-phase rotor winding, a B-phase rotor winding and a C-phase rotor winding. The pulse speed adjusting type wound rotor asynchronous motor is suitable for various fields.