A solar cell module, comprising: two solar cells, each including: a photoelectric conversion part which has first and second main faces; a first electrode that is provided on the first main face and that is made of conductive paste; and a second electrode that is provided on any one of the first and second main faces and that has a polarity opposite to that of the first electrode; a wiring member for electrically connecting the first electrode of one solar cell of the two solar cells to the second electrode of the other solar cell; and a connection layer that is provided between the first electrode and the wiring member and that is made of resin including a plurality of conductive particles, wherein: the first electrode is electrically connected to the wiring member by the plurality of conductive particles, a surface of the first electrode having a contact with the connection layer has a convex section and a concave section; the plurality of conductive particles are placed in the concave section, wherein the plurality of conductive particles protrude from the concave section; the plurality of conductive particles in contact with the concave section of the first electrode contacts the wiring member, and; wherein, in a range of 1mm of the surface of the first electrode appearing in a cutting plane perpendicular to the surface of the first electrode, a value obtained by dividing an average particle diameter of the conductive particles determined by an average value of a major axis of the conductive particles by a surface roughness of the first electrode determined by a ten points average height is within a range of 0.2 or more and 1.5 or less. two solar cells, each including: a photoelectric conversion part which has first and second main faces; a first electrode that is provided on the first main face and that is made of conductive paste; and a second electrode that is provided on any one of the first and second main faces and that has a polarity opposite to that of the first electrode; a photoelectric conversion part which has first and second main faces; a first electrode that is provided on the first main face and that is made of conductive paste; and a second electrode that is provided on any one of the first and second main faces and that has a polarity opposite to that of the first electrode; a wiring member for electrically connecting the first electrode of one solar cell of the two solar cells to the second electrode of the other solar cell; and a connection layer that is provided between the first electrode and the wiring member and that is made of resin including a plurality of conductive particles, wherein: the first electrode is electrically connected to the wiring member by the plurality of conductive particles, a surface of the first electrode having a contact with the connection layer has a convex section and a concave section; the plurality of conductive particles are placed in the concave section, wherein the plurality of conductive particles protrude from the concave section; the plurality of conductive particles in contact with the concave section of the first electrode contacts the wiring member, and; the first electrode is electrically connected to the wiring member by the plurality of conductive particles, a surface of the first electrode having a contact with the connection layer has a convex section and a concave section; the plurality of conductive particles are placed in the concave section, wherein the plurality of conductive particles protrude from the concave section; the plurality of conductive particles in contact with the concave section of the first electrode contacts the wiring member, and;