An electric rotary machine has a stator, a second rotor, and a first rotor which are arranged in order on a coaxial shaft. The first rotor has a plurality of magnetic poles having a different polarity. The stator has stator winding wires. The second rotor has a magnetic iron core and short circuit conductors. The magnetic iron core has first magnetic passage parts, second magnetic passage parts, and conductor holder parts. Both ends of the short circuit conductor is electrically connected to make a short circuit. The short circuit conductors are fitted to the corresponding conductor holder parts. No short circuit conductor surrounds each of the first magnetic passage parts. The short circuit conductors surround each of the second magnetic passage parts. The first magnetic passage parts and the second magnetic passage parts are alternately arranged along a circumferential direction of the second rotor.