A solid oxide fuel cell of the present invention includes: a fuel cell unit including a fuel electrode, a solid electrolyte and an air electrode layered in the written order; a current collection assisting layer that is layered on an air electrode side of the fuel cell unit; air channels disposed on the air electrode side; and fuel gas channels disposed on a fuel electrode side. The air channels and the fuel gas channels are defined and formed by a current collector on the current collection assisting layer and a current collector on the fuel electrode side of the fuel cell unit. The air channels and the fuel gas channels extend in the same direction that is perpendicular to the fuel cell unit layering direction. The current collector on the air electrode side is fixed to the current collection assisting layer at first fixing portions that extend in the air channel extending direction, and the current collector on the fuel electrode side is fixed to the fuel electrode side of the fuel cell unit at second fixing portions that extend in the fuel gas channel extending direction. The solid oxide fuel cell is characterized in that the current collection assisting layer has such flexural rigidity that is lower in a direction perpendicular to the air channel extending direction than in the air channel extending direction.