Brushless planetary speed reduction hub motor

The invention relates to a brushless planetary speed reduction hub motor, which comprises a main shaft, a hub, a speed reducer component and a motor component, wherein the motor component is connected with the speed reducer component; the speed reducer component is connected with the hub; and the hub is connected with the main shaft, and then is fixed. The brushless planetary speed reduction hub motor is characterized in that: the speed reducer component comprises a sun gear, a planetary carrier and a transmission gear; the motor component comprises a stator and a rotor; a shaft sleeve connected with the main shaft is arranged in the center of the hub; a rim is arranged on the periphery of the hub; a gear ring is arranged at a joint of the rim and a spoke; the transmission gear is arranged between the shaft sleeve and the rim, and is meshed with a rack on the inner side of the rim; and the rotor is arranged outside the stator, and is meshed with the transmission gear through the sun gear. The invention has the advantages that: the brushless planetary speed reduction hub motor is special for a robot, convenient to mount and high in efficiency and output, has a compact structure and prospect, and is flexibly configured according to needs.