A sunshade device which is provided to a fixed roof of a vehicle, the sunshade device comprising: a pair of shade guide rails which are provided on opposite sides of an indoor opening device across the indoor opening of the fixed roof; a shade of which opposite side edges are guided by the shade guide rails to open or close the indoor opening; and a winding shaft which rolls up the shade, wherein each of the opposite side edges of the shade is guided by the shade guide rail with the side edge being folded through a folding stroke whose folded width is gradually increased toward a leading end of the shade when the shade is drawn out from the winding shaft, characterised in that each of the opposite side edges of the shade is provided in advance with a folded introduction part that is formed by folding a side edge portion of the shade and connecting the folded side edge portion to a main body portion of the shade, in that the folded introduction part is formed in a predetermined length from the leading end of the shade in an open/close direction of the shade, and by: a handle attached to the leading end of the shade and including slide shoes configured to slide in the shade guide rails; and multifunctional stoppers provided at ends of the shade guide rails on an opening side of the shade respectively, wherein each of the multifunctional stoppers includes a restriction portion configured to come in contact with the handle at a completely-opened position of the shade, and a base body portion including a folding guide groove through which the folded side edge of the shade is inserted, the folding guide groove communicating with a groove portion of the shade guide rail, and wherein a first height of the opening of the folding guide groove on the opening side of the shade is larger than the height of the groove portion of the shade guide rail. a pair of shade guide rails which are provided on opposite sides of an indoor opening device across the indoor opening of the fixed roof; a shade of which opposite side edges are guided by the shade guide rails to open or close the indoor opening; and a winding shaft which rolls up the shade, wherein each of the opposite side edges of the shade is guided by the shade guide rail with the side edge being folded through a folding stroke whose folded width is gradually increased toward a leading end of the shade when the shade is drawn out from the winding shaft, characterised in that each of the opposite side edges of the shade is provided in advance with a folded introduction part that is formed by folding a side edge portion of the shade and connecting the folded side edge portion to a main body portion of the shade, in that the folded introduction part is formed in a predetermined length from the leading end of the shade in an open/close direction of the shade, and by: a handle attached to the leading end of the shade and including slide shoes configured to slide in the shade guide rails; and multifunctional stoppers provided at ends of the shade guide rails on an opening side of the shade respectively, wherein each of the multifunctional stoppers includes a restriction portion configured to come in contact with the handle at a completely-opened position of the shade, and a base body portion including a folding guide groove through which the folded side edge of the shade is inserted, the folding guide groove communicating with a groove portion of the shade guide rail, and wherein a first height of the opening of the folding guide groove on the opening side of the shade is larger than the height of the groove portion of the shade guide rail. characterised in that each of the opposite side edges of the shade is provided in advance with a folded introduction part that is formed by folding a side edge portion of the shade and connecting the folded side edge portion to a main body portion of the shade, in that the folded introduction part is formed in a predetermined length from the leading end of the shade in an open/close direction of the shade, and by: a handle attached to the leading end of the shade and including slide shoes configured to slide in the shade guide rails; and multifunctional stoppers provided at ends of the shade guide rails on an opening side of the shade respectively, wherein each of the multifunctional stoppers includes a restriction portion configured to come in contact with the handle at a completely-opened position of the shade, and a base body portion including a folding guide groove through which the folded side edge of the shade is inserted, the folding guide groove communicating with a groove portion of the shade guide rail, and wherein a first height of the opening of the folding guide groove on the opening side of the shade is larger than the height of the groove portion of the shade guide rail. a handle attached to the leading end of the shade and including slide shoes configured to slide in the shade guide rails; and multifunctional stoppers provided at ends of the shade guide rails on an opening side of the shade respectively, wherein each of the multifunctional stoppers includes a restriction portion configured to come in contact with the handle at a completely-opened position of the shade, and a base body portion including a folding guide groove through which the folded side edge of the shade is inserted, the folding guide groove communicating with a groove portion of the shade guide rail, and wherein a first height of the opening of the folding guide groove on the opening side of the shade is larger than the height of the groove portion of the shade guide rail.