The utility model relates to a rack and lock structure thereof. The rack includes the cabinet door, be provided with lock structure on the cabinet door, lock structure includes lock core and locking mechanism, the lock core moves locking and the unblock that realizes locking mechanism through driving that the cam rotates and then pushing away the connecting rod that corresponds with locking mechanism through the cam top when rotating, the cam lies in one side of lock core, and the lock core passes through transmission structure and drives the cam rotation. The utility model provides a lock structure, the cam setting is in one side of lock core, and the lock core passes through transmission structure drive cam and rotates, transmission structure forms the arm of force between the pivot of lock core and cam, the turning effort of lock core amplifies through this arm of force, makes the lock core only need very little torsional force alright drive cam to rotate and then realize whole lockstructure's locking and unblock.