A push lock body; multiple locking tongues set on the push lock body, wherein the locking buckle structure has a locking/unlocking position, and the each of the multiple drawers has a closing and pulling position; wherein when the locking buckle structure is in the locked position, the drawers are in the closed position and locked with the corresponding locking tongue, and wherein when the drawer is in the pulled out position, the drawers can be moved to the closed position and locked with the corresponding locking tongue; and wherein when the locking buckle structure is in the unlocked position, the drawers located in the closed, pulled out position are all unlocked with the corresponding locking tongue.