The utility model belongs to the technical field of automobile sundry boxes, and discloses an automobile sundry box which comprises a main box body, an auxiliary box body is movably connected to the bottom of the main box body, an adjusting plate is arranged on the inner wall of the main box body in a sliding mode, two opposite guide frames are fixedly connected to the inner wall of the main box body, and a clamping mechanism is arranged on the adjusting plate. And the adjusting plate is arranged between the two guide frames through a clamping mechanism. The position of the adjusting plate in the main box body can be adjusted according to the size of an article, during operation, only the two shifting rods need to be shifted to be close to each other, then the two pulling plates and the clamping blocks are pulled to move, the clamping effect of the adjusting plate and the adjusting groove is relieved, the depth adjustment of the adjusting plate in the main box body by personnel is achieved, and the working efficiency is improved. And the adjusting plate has the characteristic of being detachable in the main box body, so that the inner wall of the main box body and the surface of the adjusting plate are conveniently cleaned subsequently, and the practicability of the main box body is improved.