Automobile brake auxiliary device

The utility model discloses an automobile brake auxiliary device, which relates to the technical field of brake auxiliary devices, and comprises an automobile bottom plate, the lower end of the automobile bottom plate is in contact with a mounting seat, the mounting seat is provided with a locking mechanism, and the locking mechanism comprises a fastening bolt, a limiting ring groove, a clamping rod, an end block and an elastic piece. A baffle is fixedly connected into the mounting base, and a telescopic rod is arranged on the baffle. The mounting base is arranged on the automobile bottom plate, the fastening bolt is arranged on the mounting base, the limiting ring groove is formed in the fastening bolt, the clamping rod is arranged on the mounting base, the end block is arranged on the clamping rod, the elastic piece is arranged on the end block, and through the arrangement of the fastening bolt, the mounting base can be locked and fixed; and under the action of structures such as a clamping rod and a limiti