A headlight structure for a vehicle, comprising: two first light sources accommodated in a housing, the first light sources adapted to emit headlight rays; a light-blocking light cover covering a front surface of the housing; two reflectors (45, 46) disposed between the light cover and the housing, the reflectors (45, 46) reflecting forward the rays emitted by the first light sources; and two lenses (49L, 49R), provided on the light cover, the lenses (49L, 49R) permitting transmission of the rays therethrough while converging the rays; and a light guide member mounted to the housing so as to fringe a periphery of the reflectors (45, 46), the light guide member adapted to permit light to travel on therethrough and adapted to shine; wherein the vehicle is a saddle type vehicle, and wherein the headlight structure further comprises: two second light sources disposed in such a part as to be hidden behind the light cover when viewed from a vehicle front side, the second light sources adapted to emit light guide member rays toward the light guide member; and a control unit adapted to control turned-on states of the first light sources and the second light sources, the second light sources being disposed on each of the left and right sides of the light guide member, and each reflector (45, 46) is a lower half concave mirror obtained by removing an upper half from a concave mirror, each first light source is a light emitting diode which emits rays downward, and the second light sources are disposed above the reflectors ( 45, 46), and the first light sources, the reflectors (45, 46) and the lenses (49L, 49R) each are disposed on a respective left and right side of a vehicle body center line of the vehicle, and the light guide member being roughly W-shaped when viewed from the vehicle front side and including two, left and right, shining portions shaped to increase width as the distance from the respective second light sources increases. two first light sources accommodated in a housing, the first light sources adapted to emit headlight rays; a light-blocking light cover covering a front surface of the housing; two reflectors (45, 46) disposed between the light cover and the housing, the reflectors (45, 46) reflecting forward the rays emitted by the first light sources; and two lenses (49L, 49R), provided on the light cover, the lenses (49L, 49R) permitting transmission of the rays therethrough while converging the rays; and a light guide member mounted to the housing so as to fringe a periphery of the reflectors (45, 46), the light guide member adapted to permit light to travel on therethrough and adapted to shine; wherein the vehicle is a saddle type vehicle, and wherein the headlight structure further comprises: two second light sources disposed in such a part as to be hidden behind the light cover when viewed from a vehicle front side, the second light sources adapted to emit light guide member rays toward the light guide member; and a control unit adapted to control turned-on states of the first light sources and the second light sources, the second light sources being disposed on each of the left and right sides of the light guide member, and each reflector (45, 46) is a lower half concave mirror obtained by removing an upper half from a concave mirror, each first light source is a light emitting diode which emits rays downward, and the second light sources are disposed above the reflectors ( 45, 46), and the first light sources, the reflectors (45, 46) and the lenses (49L, 49R) each are disposed on a respective left and right side of a vehicle body center line of the vehicle, and the light guide member being roughly W-shaped when viewed from the vehicle front side and including two, left and right, shining portions shaped to increase width as the distance from the respective second light sources increases. two second light sources disposed in such a part as to be hidden behind the light cover when viewed from a vehicle front side, the second light sources adapted to emit light guide member rays toward the light guide member; and a control unit adapted to control turned-on states of the first light sources and the second light sources, the second light sources being disposed on each of the left and right sides of the light guide member, and each reflector (45, 46) is a lower half concave mirror obtained by removing an upper half from a concave mirror, each first light source is a light emitting diode which emits rays downward, and the second light sources are disposed above the reflectors ( 45, 46), and the first light sources, the reflectors (45, 46) and the lenses (49L, 49R) each are disposed on a respective left and right side of a vehicle body center line of the vehicle, and the light guide member being roughly W-shaped when viewed from the vehicle front side and including two, left and right, shining portions shaped to increase width as the distance from the respective second light sources increases.