The invention discloses an automobile drum type brake anti-tilt mounting device. The automobile drum type brake anti-tilt mounting device comprises an anti-tilt mechanism and a drum brake, wherein theright end of the anti-tilt mounting mechanism is connected with the left end of the drum brake, the right side of the anti-tilt mechanism is provided with a wheel disc, the shaft end on the left sideof the wheel disc is mounted in a shaft hole of a mounting piece, a rotating shaft of the mounting piece is rotatably connected to a shaft mounting frame, a ball hole is formed in the lower part of the left side of the mounting piece, a ball body is rotationally connected to the ball hole, a pressing piece is arranged on the left side of the ball body, a wear-resistant cushion ring is arranged onthe left side of the pressing piece, a threaded locking inclined block and a port locking inclined block are arranged on the left side of the wear-resistant cushion ring, a locking column is insertedinto the side surface of a port locking inclined block mounting part, a first adjusting column and a second adjusting column are arranged at the upper end of the threaded locking inclined block, andthe bottom end of the first adjusting column and the bottom end of the second adjusting column are arranged at the top end of the threaded locking inclined block. According to the automobile drum typebrake anti-tilt mounting device, the wheel disc can be straightened, so that the situations that the wheel disc is tilted, and even the wheel disc is disengaged and falls off are avoided.