Mechanical coded door lock

The mechanical password door lock is characterized in that a shell is arranged on a bottom plate, and a plurality of rails are arranged on the top side of the bottom plate; the lock body is movably fixed on the rails, each rail is provided with a guide rail piece, the tail end of each guide rail piece is fixedly connected with one end of the lock body and is used for driving the lock body to move, the other end of the lock body is provided with a lock cylinder, and the end part of the lock cylinder is inserted into the lock catch box when the lock catch box is in a locked state; first through grooves are formed in the upper side and the lower side of each guide rail piece, and transverse push rods are arranged in the first through grooves. An inclined support plate is arranged on the side of the top end of a transverse push rod body of the transverse push rod; the buttons are fixed to the shell through button bases, C-shaped hook plates are arranged at the bottom ends of the buttons, when the buttons are pres