A driver seat airbag device, comprising a steering wheel of a vehicle; and an airbag module including an inflator and an airbag cushion, the airbag module being housed in the steering wheel, wherein the steering wheel comprises: a variant rim with upper center part thereof omitted; a module installation surface for installing the airbag module provided in a center of the rim; a cover member covering the airbag module installed on the module installation surface; the cover member comprises: a frontal region covering an occupant side of the airbag module; an upper region extending from the upper end of the frontal region toward the front of the vehicle and covering the upper side of the airbag module; and a tear line provided in a groove shape on the airbag module side of the frontal region and upper region, which cleaves open due to expansion pressure of the airbag cushion, and causes the frontal region and upper region to open as a plurality of cover doors; the tear line extends continuously from at least the center of the frontal region to at least the center of the upper region, and the plurality of cover doors includes a left cover door and a right cover door that open respectively from the center regions of the frontal region and upper region to the left and right, characterized in thatthe tear line extends from near the center of the frontal region to a point near the center of the upper region that is more forward on the vehicle than the module installation surface, such that the cover doors (154a, 154b) are formed to include a region extending from the frontal region up to the point more toward the front of the vehicle than the module installation surface 109), and after cleaving of the cover member an opening in the upper region extends towards the front of the vehicle to a position beyond the module installation surface by a distance. the steering wheel comprises: a variant rim with upper center part thereof omitted; a module installation surface for installing the airbag module provided in a center of the rim; a cover member covering the airbag module installed on the module installation surface; a variant rim with upper center part thereof omitted; a module installation surface for installing the airbag module provided in a center of the rim; a cover member covering the airbag module installed on the module installation surface; the cover member comprises: a frontal region covering an occupant side of the airbag module; an upper region extending from the upper end of the frontal region toward the front of the vehicle and covering the upper side of the airbag module; and a tear line provided in a groove shape on the airbag module side of the frontal region and upper region, which cleaves open due to expansion pressure of the airbag cushion, and causes the frontal region and upper region to open as a plurality of cover doors; the tear line extends continuously from at least the center of the frontal region to at least the center of the upper region, and the plurality of cover doors includes a left cover door and a right cover door that open respectively from the center regions of the frontal region and upper region to the left and right, characterized in thatthe tear line extends from near the center of the frontal region to a point near the center of the upper region that is more forward on the vehicle than the module installation surface, such that the cover doors (154a, 154b) are formed to include a region extending from the frontal region up to the point more toward the front of the vehicle than the module installation surface 109), and after cleaving of the cover member an opening in the upper region extends towards the front of the vehicle to a position beyond the module installation surface by a distance. a frontal region covering an occupant side of the airbag module; an upper region extending from the upper end of the frontal region toward the front of the vehicle and covering the upper side of the airbag module; and a tear line provided in a groove shape on the airbag module side of the frontal region and upper region, which cleaves open due to expansion pressure of the airbag cushion, and causes the frontal region and upper region to open as a plurality of cover doors; the tear line extends continuously from at least the center of the frontal region to at least the center of the upper region, and the plurality of cover doors includes a left cover door and a right cover door that open respectively from the center regions of the frontal region and upper region to the left and right, characterized in thatthe tear line extends from near the center of the frontal region to a point near the center of the upper region that is more forward on the vehicle than the module installation surface, such that the cover doors (154a, 154b) are formed to include a region extending from the frontal region up to the point more toward the front of the vehicle than the module installation surface 109), and after cleaving of the cover member an opening in the upper region extends towards the front of the vehicle to a position beyond the module installation surface by a distance.