Objective "Micro Cooling Fan" invention is to solve some problems of the prior art, there is provided a novel microwave brush-less cooling fan motor. To achieve the above object, the present invention employs the following technical solution a new microwave oven brush-less cooling fan motor, comprising a motor housing, oil bearing, the stator assembly and the rotor assembly, which is special because of the new brush-less motor cooling fan also includes a microwave oven circuit boards, said stator assembly includes a stator core, a clamp, offline folders, and line package, the stator core, the clamp and offline clips mounted on the motor housing of the center column, the package has two lines group, respectively, and LI line package line package L2, surround the two line package mounted on the stator core, the rotor assembly includes a magnet ring, plastic magnetic stripe and the rotor shaft, said two oil bearing , respectively mounted on the top and bottom of the center column of the motor housing, oil-bearing connecting the rotor shaft and the center column of the motor housing, the plastic magnetic strip and a magnetic steel trap connected to the rotor shaft and connected to the motor housing, the said circuit board is fixed to the motor base, said circuit board containing electronic components.