Snowboard brake device

The invention discloses a snowboard brake device which comprises a double-end steering engine, a rotating shaft, a supporting frame and a brake knife, the double-end steering engine is connected with the rotating shaft, the end of the rotating shaft penetrates through a rotating shaft base and is connected with the supporting frame, the rotating shaft base is fixed to one end of a snowboard, and the end of the supporting frame is rotationally connected with the brake knife. The double-end steering engine and the brake knife are combined to form the brake device, in the normal state, the brake knife is in a suspended state and cannot be inserted into snow to affect sliding, and when a skier cannot control the skateboard, the brake knife is driven to be inserted into the snow through rotation of the steering engine, so that the skateboard is prevented from sliding. The problem that potential safety hazards are caused to a user and surrounding people due to the fact that the speed and the direction cannot be con