A roll sunshade device, which includes a screen for shadowing an inner opening of a roof of a vehicle, a rotating body which is disposed ahead of the inner opening or behind the inner opening in a front-rear direction of the vehicle and rotates freely around an axis in a vehicle width direction, a turning member which is disposed at a predetermined distance from the rotating body in the front-rear direction of the vehicle and rotates freely around an axis in the vehicle width direction, and two circular wires which are disposed on both sides of the inner opening in the vehicle width direction, respectively and hung between the rotating body and the turning member, in which both edge portions of the screen in the vehicle width direction are supported by the two circular wires, respectively, and when the screen is slid in the front-rear direction of the vehicle from a state where the screen shadows the inner opening, the screen is folded along an outer circumferential surface of the turning member.