The invention provides a motor, which comprises a casing, a rotor and a stator, and is characterized in that the casing is disposed in an enclosed manner to form a mounting cavity, and the casing is provided with an air inlet and an air outlet; the rotor is mounted in the mounting cavity; and the stator is mounted in the mounting cavity and disposed at the periphery of the rotor in a sleeved manner, the stator is provided with a first cooling channel, the first cooling channel extends along the radial direction of the stator and is inclined with respect to the axial direction of the stator, a first end of the first cooling channel extends to the peripheral surface of the stator and is communicated with the air inlet, and a second end of the first cooling channel extends to the rotor. The stator in the invention is provided with the first cooling channel which extends along the radial direction of the stator and is inclined with respect to the circumferential direction of the stator, so that the external air is easily transported to the rotor from the air inlet on the casing by means of an effect of the first cooling channel so as to performing cooling on the rotor and the stator, and the hot air after cooling is discharged from the air outlet. The motor is simple in structure and easy to implement.