A sunshade device disposed in an opening of a vehicle, comprising: a pair of winding devices (12A, 12B) arranged to be separated away from each other; a sheet-like shade member (13A, 13B) wound by each of the winding devices (12A, 12B) to be drawable therefrom; a frame member (15A, 15B) disposed at a draw-out end of each shade member (13A, 13B) so as to extend along an end edge thereof; and a sealing member that covers a portion between the draw-out end of one side shade member (13A, 13B) and the draw-out end of another side shade member (13A, 13B), in a closed-shade state where the draw-out ends of both shade members (13A, 13B) are set close to each other in a substantial center of the opening of the vehicle, wherein the sealing member is disposed in the draw-out end of the one side shade member (13A, 13B) so as to extend along the end edge thereof, wherein a hollow cross-sectional portion (16, 22) extending along the end edge of the draw-out end of the other side shade member (13A, 13B) is disposed in the frame member (15A, 15B) of the other side shade member (13A, 13B), and wherein the sealing member is brought into contact with the hollow cross-sectional portion (16, 22) of the frame member (15A, 15B) of the other side shade member (13A, 13B) in the closed-shade state, characterized in that: a shade holding portion which holds the end edge of the draw-out end side of the other side shade member (13A, 13B) in the frame member (15A, 15B) of the other side shade member (13A, 13B) is disposed in a vehicle interior side of the hollow cross-sectional portion (16, 22), the shade holding portion causes the other side shade member (13A, 13B) to cover a surface facing the vehicle interior and a surface facing the one side shade member (13A, 13B), a surface of the other side shade member (13A, 13B) facing the one side shade member (13A, 13B) is separated from the one side shade member (13A, 13B) via a gap, and the sealing member closes the gap. a pair of winding devices (12A, 12B) arranged to be separated away from each other; a sheet-like shade member (13A, 13B) wound by each of the winding devices (12A, 12B) to be drawable therefrom; a frame member (15A, 15B) disposed at a draw-out end of each shade member (13A, 13B) so as to extend along an end edge thereof; and a sealing member that covers a portion between the draw-out end of one side shade member (13A, 13B) and the draw-out end of another side shade member (13A, 13B), in a closed-shade state where the draw-out ends of both shade members (13A, 13B) are set close to each other in a substantial center of the opening of the vehicle, wherein the sealing member is disposed in the draw-out end of the one side shade member (13A, 13B) so as to extend along the end edge thereof, wherein a hollow cross-sectional portion (16, 22) extending along the end edge of the draw-out end of the other side shade member (13A, 13B) is disposed in the frame member (15A, 15B) of the other side shade member (13A, 13B), and wherein the sealing member is brought into contact with the hollow cross-sectional portion (16, 22) of the frame member (15A, 15B) of the other side shade member (13A, 13B) in the closed-shade state, a shade holding portion which holds the end edge of the draw-out end side of the other side shade member (13A, 13B) in the frame member (15A, 15B) of the other side shade member (13A, 13B) is disposed in a vehicle interior side of the hollow cross-sectional portion (16, 22), the shade holding portion causes the other side shade member (13A, 13B) to cover a surface facing the vehicle interior and a surface facing the one side shade member (13A, 13B), a surface of the other side shade member (13A, 13B) facing the one side shade member (13A, 13B) is separated from the one side shade member (13A, 13B) via a gap, and the sealing member closes the gap.