A solar cell module includes a first solar cell, a second solar cell and an electrically connecting member. The first solar cell has a first connecting side having at least one first protruding portion and at least one first recess portion that are adjacent to each other. The second solar cell has a second connecting side having at least one second protruding portion and at least one second recess portion that are adjacent to each other. The shape of the first protruding portion matches the shape of the second recess portion while the shape of the first recess portion matches the shape of the second protruding portion. The electrically connecting member electrically connects the first upper electrode layer of the first solar cell and the second lower electrode layer of the second solar cell.