A cell structure for a fuel cell comprising: power generation cell assemblies (101, 131) each including a power generation cell which includes a fuel electrode, an oxidant electrode, and an electrolyte sandwiched therebetween and is configured to generate power by using supplied gases; a separator (102, 112, 122, 132, 142, 152, 202, 302) configured to separate adjacent power generation cell assemblies (101, 131) from each other; a sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) disposed between an edge of one of the adjacent power generation cell assemblies (101, 131) and an edge of the separator (102, 112, 122, 132, 142, 152, 202, 302) and configured to retain any of the gases supplied to the power generation cells between the one of the adjacent power generation cell assemblies (101, 131) and the separator (102, 112, 122, 132, 142, 152, 202, 302); and a heat exchange part (191, 192, 193, 194, 195, 196, 197) disposed adjacent to the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) and configured to perform temperature control of the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) by using any of the gases supplied to the power generation cells, characterized in that the heat exchange part (191, 192, 193, 194, 195, 196, 197) is disposed adjacent to the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) along a stacking direction, the heat exchange part (191, 192, 194, 195, 196, 197) is formed by supplying any of the gases into a space defined between an edge of the other of the adjacent power generation cell assemblies and a first rib (102p, 112p, 122p, 142p, 152p, 202p, 302p) that is formed by bending the edge of the separator (102, 112, 122, 142, 152, 202, 302) into a convex shape, the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) being disposed adjacent to, and stacked on, the first rib (102p, 112p, 122p, 142p, 152p, 202p, 302p), or the heat exchange part is formed by supplying any of the gases into a space defined between a second rib formed by bending the edge of the one of the adjacent power generation cell assemblies into a convex shape and an edge of another separator disposed on a side of the one of the adjacent power generation cell assemblies opposite to the separator, the sealing member (104A, 104C) being disposed adjacent to, and stacked on, the second rib. power generation cell assemblies (101, 131) each including a power generation cell which includes a fuel electrode, an oxidant electrode, and an electrolyte sandwiched therebetween and is configured to generate power by using supplied gases; a separator (102, 112, 122, 132, 142, 152, 202, 302) configured to separate adjacent power generation cell assemblies (101, 131) from each other; a sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) disposed between an edge of one of the adjacent power generation cell assemblies (101, 131) and an edge of the separator (102, 112, 122, 132, 142, 152, 202, 302) and configured to retain any of the gases supplied to the power generation cells between the one of the adjacent power generation cell assemblies (101, 131) and the separator (102, 112, 122, 132, 142, 152, 202, 302); and a heat exchange part (191, 192, 193, 194, 195, 196, 197) disposed adjacent to the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) and configured to perform temperature control of the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) by using any of the gases supplied to the power generation cells, characterized in that the heat exchange part (191, 192, 193, 194, 195, 196, 197) is disposed adjacent to the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) along a stacking direction, the heat exchange part (191, 192, 194, 195, 196, 197) is formed by supplying any of the gases into a space defined between an edge of the other of the adjacent power generation cell assemblies and a first rib (102p, 112p, 122p, 142p, 152p, 202p, 302p) that is formed by bending the edge of the separator (102, 112, 122, 142, 152, 202, 302) into a convex shape, the sealing member (104A, 114A, 144A, 154A, 104B, 104C, 114C, 144C, 154C, 104D) being disposed adjacent to, and stacked on, the first rib (102p, 112p, 122p, 142p, 152p, 202p, 302p), or the heat exchange part is formed by supplying any of the gases into a space defined between a second rib formed by bending the edge of the one of the adjacent power generation cell assemblies into a convex shape and an edge of another separator disposed on a side of the one of the adjacent power generation cell assemblies opposite to the separator, the sealing member (104A, 104C) being disposed adjacent to, and stacked on, the second rib.