A solar battery module (1) is provided with: a light diffusing member (40) adjacent to a solar battery element (11); a tab wire (20) formed on an obverse surface of the solar battery element (11) and having a light diffusing shape on a light incident-side surface; and an obverse-surface protection member (80) having a first principal surface and a second principal surface. When the average distance between the obverse surface of the solar battery element (11) and the second principal surface is D, the obverse-surface protection member (80) has a refractive index n, and the total-reflection critical angle satisfying sinR = 1/n is R, the tab wire (20) is disposed in a region other than a region (11Z) between a position (11B) at a distance 3.46 × D from an end portion (40B) of the light diffusing member (40) closest to the solar battery element (11) and a position (11A) at a distance 2 × D × tanR from an end portion (40A) thereof farthest from the solar battery element (11).
