A mudguard member for a saddled vehicle, the mudguard member covering above a vehicle wheel, wherein the mudguard member is formed from fiber-reinforced resin, the mudguard member having a surface provided with a reinforcing rib made of resin, the surface facing toward the vehicle wheel, wherein the mudguard member is formed in a shape elongated in a vehicle longitudinal direction; the mudguard member includes a vehicle attached portion that is arranged at one end in the vehicle longitudinal direction, and a length extension portion that extends from the vehicle attached portion to the other end; and the length extension portion has a top panel and side panels that extend obliquely downward from both vehicle-widthwise sides of the top panel, wherein the reinforcing rib includes longitudinal ribs (61, 62) that extend from the vehicle attached portion to a vehicle-longitudinal center of the length extension portion, the reinforcing rib further including transverse ribs (51, 52, 53, 54) that extend in a direction of a vehicle width; wherein the longitudinal ribs (61, 62) and the transverse ribs (51, 52, 53, 54) are coupled to each other; the longitudinal ribs (61, 62) include a pair of left and right first longitudinal ribs and a second longitudinal rib extending at the center in the vehicle-width direction and the transverse ribs (51, 52, 53, 54) include a first transverse rib on the vehicle rear side, a second transverse rib, a third transverse rib and a fourth transverse rib; receiving portions, through which through holes are formed, are provided integrally with a pair of left and right fourth transverse rib outer sides, wherein the through holes communicate with through holes formed in a vertical surface of the mudguard member; a receiving portion, which is placed at the end of the second longitudinal rib, has a through hole, and the through hole communicates with a through hole of a bulge portion of the mudguard member; and the three receiving portions (71, 72) in all are connected through the longitudinal rib and the transverse rib. wherein the mudguard member is formed from fiber-reinforced resin, the mudguard member having a surface provided with a reinforcing rib made of resin, the surface facing toward the vehicle wheel, wherein the mudguard member is formed in a shape elongated in a vehicle longitudinal direction; the mudguard member includes a vehicle attached portion that is arranged at one end in the vehicle longitudinal direction, and a length extension portion that extends from the vehicle attached portion to the other end; and the length extension portion has a top panel and side panels that extend obliquely downward from both vehicle-widthwise sides of the top panel, wherein the reinforcing rib includes longitudinal ribs (61, 62) that extend from the vehicle attached portion to a vehicle-longitudinal center of the length extension portion, the reinforcing rib further including transverse ribs (51, 52, 53, 54) that extend in a direction of a vehicle width; wherein the longitudinal ribs (61, 62) and the transverse ribs (51, 52, 53, 54) are coupled to each other; the longitudinal ribs (61, 62) include a pair of left and right first longitudinal ribs and a second longitudinal rib extending at the center in the vehicle-width direction and the transverse ribs (51, 52, 53, 54) include a first transverse rib on the vehicle rear side, a second transverse rib, a third transverse rib and a fourth transverse rib; receiving portions, through which through holes are formed, are provided integrally with a pair of left and right fourth transverse rib outer sides, wherein the through holes communicate with through holes formed in a vertical surface of the mudguard member; a receiving portion, which is placed at the end of the second longitudinal rib, has a through hole, and the through hole communicates with a through hole of a bulge portion of the mudguard member; and the three receiving portions (71, 72) in all are connected through the longitudinal rib and the transverse rib.