The utility model relates to the technical field of hooks, in particular to a hook and a luggage case, the hook comprises a base, a hanging piece, a first elastic piece, a sliding lock and a second elastic piece, the base is provided with a sliding groove extending along a first direction, the hanging piece is arranged in the sliding groove in a sliding mode and is provided with a lock groove extending along a second direction, the first elastic piece is arranged in the sliding groove, and the sliding lock is arranged in the lock groove. The first elastic piece is installed in the locking groove and drives the hanging piece to slide in the first direction, the sliding lock is arranged in the locking groove in a sliding mode, the second elastic piece is installed in the locking groove and drives the sliding lock to slide in the second direction so that the sliding lock can be connected with the base in a clamped mode, the first direction is the direction away from the luggage case, and the second direction is perpendicular to the first direction. According to the hook, the first direction and the second direction which are perpendicular to each other are designed, the sliding lock slides in the second direction so that the hanging piece can be popped out of the base in the first direction, the hanging piece can be prevented from being popped out of the base when being collided easily, and the aim of reducing the risk that the hanging piece is touched by mistake is achieved.