The utility model relates to a push-type object box automatic-clocking and releasing device, in particular to a mechanical push-type object box automatic-clocking and automatic-releasing device. The device comprises a button, a lock tongue and a lock body, wherein, the lock body is a cavity body, slots are formed on both sides of the lock body, the lock tongue is arranged in the cavity of the lock body, a spring is installed at one end of the lock tongue, the other end of the lock tongue is of a wedge shape, and one end of the wedge shape extends out of the lock body; the working surface at one end of the button is a wedge-shaped structure, one side of the wedge-shaped structure is a horizontal working surface and the other side of the wedge-shaped structure is an inclined working surface; and minor axles on both sides of the lock tongue extend out of the slots of the lock body and are in contact with the inclined working surface of the button. The utility model can solve the problems of complex structure and higher cost of the locking device in the prior art, can be automatically locked after the drawer type object box is pushed to the right position and enables the object box to automatically bounce out during the process of turning on the button by pressing.