The invention discloses a wind pressure switch achieving vertical motion. The wind pressure switch comprises a left shell and a right shell; an elastic membrane is clamped between the left shell and the right shell and divides a space formed by the left shell and the right shell into a negative pressure cavity and a positive pressure cavity, the negative pressure cavity is located in the right shell, and the positive pressure cavity is located in the left shell; the left shell and the right shell are each provided with a blast connection; a metal elastic sheet with at least two pins is arranged in the left shell, and the left end pin and the right end pin of the metal elastic sheet are fixed to the inner wall of the left wall; the two end sections of the metal elastic sheet are each provided with an arc-shaped concave part in a bent mode; a connecting part is connected to the middle of the metal elastic sheet and connected with the middle of the elastic membrane; a magnet is fixed to the middle of the face, located in the negative pressure cavity, of the elastic membrane; a hall sensor is fixed to the middle of the right shell. According to the wind pressure switch, the structure is simple, the practicability is high, magnetic force is always in the central point, and the metal elastic sheet cannot shake but only does vertical motion front and back.