Hand support and dust cover combined structure capable of changing forms

The utility model discloses a form-convertible hand support and dust cover combined structure which comprises a first cover plate and a second cover plate which are mutually connected in a rotating mode, one side of the first cover plate is provided with a first supporting plate which inclines downwards, one side of the second cover plate is connected with a foldable second supporting plate in a rotating mode, and the second supporting plate is provided with a second supporting plate which inclines downwards. The first cover plate, the second cover plate and the second supporting plate are all unfolded to form a dust cover structure, the first cover plate, the second cover plate and the second supporting plate are all folded to form a hand supporting structure, and one side of the hand supporting structure is adjacent to the side face of a keyboard through the first supporting plate. The structure can be freely switched between the hand support and the dustproof cover, the problem that the dustproof cover and