Vehicle roof structure and vehicle, and method of manufacturing vehicle roof unit

A vehicle roof structure (2) includes a solar cell unit (3) including a plurality of solar cells (3C) arranged in a planar form, a plate-like roof panel (4) made of a resin having transparency and disposed to cover the solar cell unit (3) from above, and a plurality of reinforcements (5) each being implemented by a metallic member and disposed to support the solar cell unit (3) from below and to extend in a vehicle longitudinal direction and/or a vehicle width direction. The vehicle roof can be reduced in weight.