A vehicle headlamp employing a semiconductor-type light source as a light source, said headlamp comprising: the semiconductor-type light source having a light emitting chip; a reflector having a reflection surface for reflecting light from the light emitting chip and then emitting the reflected light forward of a vehicle as a predetermined light distribution pattern; a holding member by which the reflector is held; positioning means for placing the semiconductor-type light source on the holding member; a mount member for mounting the semiconductor-type light source which is placed on the holding member by the positioning means, on the holding member; and an optical member for optically processing by the light directly radiated from the light emitting chip forward of the vehicle, wherein the optical member is integrally structured with the mount member so as to have a predetermined positional relationship with the semiconductor-type light source in a case where the semiconductor-type light source placed on the holding member by the positioning means is mounted on the holding member by the mount member so that a predetermined additional light distribution pattern is formed by the optical processing by the optical member, the mount member has a protrusive portion to place the mount member which is integrally structured with the optical member, in a recessed portion, the mount member integrally structured with optical member fixedly holds the semiconductor-type light source by a fixing member on the holding member in a state that the mount member is placed on the semiconductor-type light source which is placed on the holding member by the positioning means. the semiconductor-type light source having a light emitting chip; a reflector having a reflection surface for reflecting light from the light emitting chip and then emitting the reflected light forward of a vehicle as a predetermined light distribution pattern; a holding member by which the reflector is held; positioning means for placing the semiconductor-type light source on the holding member; a mount member for mounting the semiconductor-type light source which is placed on the holding member by the positioning means, on the holding member; and an optical member for optically processing by the light directly radiated from the light emitting chip forward of the vehicle, wherein the optical member is integrally structured with the mount member so as to have a predetermined positional relationship with the semiconductor-type light source in a case where the semiconductor-type light source placed on the holding member by the positioning means is mounted on the holding member by the mount member so that a predetermined additional light distribution pattern is formed by the optical processing by the optical member, the mount member has a protrusive portion to place the mount member which is integrally structured with the optical member, in a recessed portion, the mount member integrally structured with optical member fixedly holds the semiconductor-type light source by a fixing member on the holding member in a state that the mount member is placed on the semiconductor-type light source which is placed on the holding member by the positioning means.