To achieve smooth drawing of air into a fuel cell, the air-flow resistance of an exhaust passage is reduced and intrusion of water into an exhaust duct is prevented. In the present invention, in an exhaust device of a fuel cell vehicle, an exhaust chamber is attached to a lower surface of the front hood, the exhaust duct extends upward in a vertical direction from a rear portion of a fuel cell case, an exhaust port at an upper end of the exhaust duct opens to an interior of the exhaust chamber, a penetrating hole through which the inside of the exhaust chamber communicates with the outside space, is formed in the front hood in a portion in front of the exhaust port in a vehicle front and rear direction, the penetrating hole is covered with a cover, and an opening portion opening toward a rear side of the vehicle and being positioned above and away from an upper surface of the front hood, is formed in the cover.