The invention discloses a motor with an active heat dissipation function, which includes a motor body, a motor shaft, and a U-shaped frame. In the present invention, the motor shaft penetrates into the inner cavity of the frame to install fan blade 2. Under the action of through hole 1, heat dissipation can be performed on the end of the motor, and the motor shaft, transmission shaft 1 and transmission shaft 2 are all driven by belt Connected, under the action of bevel gear 1 and bevel gear 2, the transmission shaft 3 drives the fan blade 3 to rotate, and under the action of the protective cover, copper pipe and wind cover, the heat dissipation can be carried out on both sides of the motor body, and the wind cover is in the shape of The arc shape is set, and heat dissipation can be carried out at multiple angles. Compared with the traditional heat dissipation device, it can effectively avoid the situation of more local heat and improve the heat dissipation efficiency. The copper tube and the airflow inside the copper tube cool down, making the heat dissipation efficiency better.