The invention provides a power divider gear shifting mechanism and an automobile, and relates to the technical field of automobile components. The power divider gear shifting mechanism comprises a high-low-gear air cylinder located in a power divider shell and detachably connected with the power divider shell, and a neutral-gear air cylinder detachably connected with the high-low-gear air cylinder. The high-low-gear air cylinder and the neutral-gear air cylinder are each connected with at least one electromagnetic valve. A high-low-gear piston detachably connected with one end of a power divider gear shifting rod is arranged in the high-low-gear air cylinder and can slide along the inner wall of the high-low-gear air cylinder. A neutral-gear piston matched with the inner structure of the neutral-gear air cylinder is arranged in the neutral-gear air cylinder, and the neutral-gear piston can slide along the inner wall of the neutral-gear air cylinder. The electromagnetic valves and the air cylinders are integrally arranged, the work state of the electromagnetic valves is controlled through electric connection so that the gear conversion of a power divider is achieved, and the integration level of the power divider gear shifting mechanism is improved. The whole automobile arrangement is simple, the gear shifting operation is simple and convenient, and the development cost is reduced.