The object is to improve degree of freedom in design for the cross-sectional shape of a region of light guided by the lens structure. A lens structure for a vehicle light body guides at least part of the light in the Z+ direction to both sides of the X direction, and then guides in the Y+ direction. The first reflective surface includes a first reflective surface sub part projecting from the first reflective surface main part to the X+ direction. The second reflective surface includes a second reflective surface sub part projecting from the second reflective surface main part to the X− direction. The first reflective surface sub part and the second reflective surface sub part are arranged in the Y direction in a plan view seen in the Z direction, and intersect in a plan view seen in the Y direction.