The invention discloses a wind guiding protector, which is arranged on the protothorax of a user when in use. The wind guiding protector is a sheet body the transverse direction of which is in an arc shape conforming to a human body; the wind guiding protector is provided with a raised peak part at a chest position; and the two sides of the wind guiding protector are provided with a plurality of wind guiding grooves in a mode of symmetrical distribution, and the wind guiding grooves extend from the middle part to an outer end. The wind guiding protector can be put on the chest when the user exercises, thus, in the processing of moving forward, the oncoming wind forms a tangential wind flow on the surface of the wind guiding protector; and the tangential wind flow flows through the two sides of the user along the direction of the wind guiding grooves, thereby being capable of reducing wind resistance and improving riding speed.