A solar battery mounting structure for a vehicle mounts a solar battery module on the roof of a vehicle body. The solar battery module includes a glass panel and sealant located on a side of the glass panel that faces the inside of the passenger compartment of the vehicle. Solar battery cells are sealed in the sealant. A roof reinforcing member bridges over the roof of the vehicle body. The solar battery module includes a through portion that extends to the glass panel through the sealant. Adhesive is provided in the through portion. The adhesive bonds and fixes the glass panel to the roof reinforcing member.