SOLID ELECTROLYTE FUEL CELL

Provided is a solid electrolytic fuel battery capable of preventing a temperature from locally increasing in a separator and a cell, even when the separator is formed of a ceramic material. A battery structure part of the solid electrolytic fuel battery includes a plurality of cells each composed of fuel electrode layers (11a and 11b), a solid electrolytic layer, and air electrode layers (13a and 13b). A cell separation part is arranged between the plurality of cells, and formed of a material containing ceramics. A gas supply path structure part (21b) has fuel gas supply paths (23a and 23b) to supply a fuel gas to each cell, and an air supply path (24) to supply air to each cell. The air supply path (24) is arranged in an inside of the battery structure part.