A solar cell array (1, 102, 103, 104) comprising: a plurality of solar cell modules (3, 31, 32) arranged in a first direction of an installation surface; and a mounting member (4, 42, 43) configured to secure adjacent ones of the plurality of solar cell modules (3, 31, 32), wherein the mounting member (4, 42, 43) comprises a first supporting member extending in the first direction; a second supporting member provided on the first supporting member and extending in a second direction that is orthogonal to the first direction; a first restraining member (23, 30) provided on one side of the second supporting member in the first direction and configured to restrain the second supporting member from moving in the second direction and in a height direction that is orthogonal to the first direction and the second direction; and a second restraining member provided on another side of the second supporting member in the first direction and configured to restrain the second supporting member from moving in the height direction, wherein the first restraining member (23, 30) includes sidewall portions hanging downward from two respective sides thereof in the second direction and along respective side portions of the first supporting member, wherein the first restraining member (23, 30) is movable together with the second supporting member in the first direction on the first supporting member, and wherein the second restraining member restrains the second supporting member from moving in the first direction. a plurality of solar cell modules (3, 31, 32) arranged in a first direction of an installation surface; and a mounting member (4, 42, 43) configured to secure adjacent ones of the plurality of solar cell modules (3, 31, 32), wherein the mounting member (4, 42, 43) comprises a first supporting member extending in the first direction; a second supporting member provided on the first supporting member and extending in a second direction that is orthogonal to the first direction; a first restraining member (23, 30) provided on one side of the second supporting member in the first direction and configured to restrain the second supporting member from moving in the second direction and in a height direction that is orthogonal to the first direction and the second direction; and a second restraining member provided on another side of the second supporting member in the first direction and configured to restrain the second supporting member from moving in the height direction, a first supporting member extending in the first direction; a second supporting member provided on the first supporting member and extending in a second direction that is orthogonal to the first direction; a first restraining member (23, 30) provided on one side of the second supporting member in the first direction and configured to restrain the second supporting member from moving in the second direction and in a height direction that is orthogonal to the first direction and the second direction; and a second restraining member provided on another side of the second supporting member in the first direction and configured to restrain the second supporting member from moving in the height direction, wherein the first restraining member (23, 30) includes sidewall portions hanging downward from two respective sides thereof in the second direction and along respective side portions of the first supporting member, wherein the first restraining member (23, 30) is movable together with the second supporting member in the first direction on the first supporting member, and wherein the second restraining member restrains the second supporting member from moving in the first direction.