The utility model relates to an energy -conserving frequency conversion permanent magnet motor that radiating effect is good, including motor casing, the rotor shaft is installed in the last rotationof motor casing, is fixed with the rotor on the rotor shaft, and the outside cover of rotor is equipped with the stator, and the stator is fixed on motor casing, the last thermal module that is equipped with of motor casing, thermal module includes high -efficient radiator and ordinary radiator, high -efficient radiator is located motor casing's upper portion, and ordinary radiator is located motor casing's lower part, high -efficient radiator includes the radiating shell, is equipped with sealed heat exchange chamber in the radiating shell, is equipped with heat exchange medium in the heat exchange chamber, ordinary radiator is solid metalwork, ordinary radiator and high -efficient radiator all fix on motor casing and ordinary radiator and high -efficient radiator both ends equally divideand do not extend to motor casing's both sides. The cooperation of ordinary radiator and high -efficient radiator is used, make full use of motor casing's the position characteristic of different positions, the radiating effect is good.