NOVELTY - A solar battery module comprises a connection member (20) connected on the collecting electrodes and arranged on the solar cells for electrically connecting the adjacent solar cells. The connection member comprises a light diffusion section (40) having a rugged surface for diffusely reflecting a light incident through the light penetrable sheet member to the light penetrable sheet member opposite the light penetrable sheet member.    USE - Used as a solar battery module (claimed).    ADVANTAGE - The present invention provides easily and inexpensively provide a structure of effectively utilizing a light incident on an invalid area of a solar cell; means to improve output characteristics of the solar cell by effectively utilizing the light; and a solar battery module in which plate-like solar cells are held between a light penetrable sheet member on a light receiving surface side and a sheet member on a back surface side, and internal apertures are filled with a sealing resin, where a light diffusion section for diffusely reflecting a light or a light diffusion section of a white color is arranged in an invalid region of each solar cell.    DETAILED DESCRIPTION - A solar battery module comprises a light penetrable sheet member (12); a sheet member; plate-like solar cells (11) held between the light penetrable sheet member on a light receiving surface side and the sheet member on a back surface side being sealed by a sealing resin (14), the solar cells comprising a collecting electrode (10) arranged on the light receiving surface and the back surface; and a connection member (20) connected on the collecting electrodes and arranged on the solar cells for electrically connecting the adjacent solar cells. The connection member comprises a light diffusion section (40) having a rugged surface for diffusely reflecting a light incident through the light penetrable sheet member to the light penetrable sheet member opposite the light penetrable sheet member.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the solar battery module.    Collecting electrode (10)    Solar cell (11)    Sheet member (12)    Sealing resin (14)    Bus electrode section (15)    Connection member (20)    Light diffusion section (40)