The invention discloses an impact-proof automobile air bag rigidity detection device. The impact-proof automobile air bag rigidity detection device comprises an L-shaped operation bench (1). Two fixed blocks are arranged on a vertical surface of the operation bench (1) in an up-down manner. The fixed blocks include an upper fixed block (3) and a lower fixed block (4). A smooth through hole penetrating a screw (5) is formed in the upper fixed block (3). A circular groove for accommodating the bottom end of the screw (5) is formed in the upper surface of the lower fixed block (4). The screw (5) is in threaded connection with a movable block (6). The movable block (6) is connected with a horizontal upper extruding plate (8) through an upright column (7). A plurality of grooves (15) for accommodating heavy objects are formed in the upper surface of the upper extruding plate (8). The impact-proof automobile air bag rigidity detection device provided by the invention is high in automatic degree and is real and reliable in detection result, the upper extruding plat has an impact-proof function, and the universality is high.