The solid oxide fuel cell apparatus of the present invention comprises: multiple fuel cells mutually electrically connected to each other; an outside cylindrical member for housing the multiple fuel cells; an oxidant gas supply flow path for supplying oxidant gas to the fuel cells; a fuel gas supply flow path for supplying fuel gas to the fuel cells; a reforming portion for producing fuel gas by reforming raw fuel gas using steam; an evaporating portion for producing steam supplied to the reforming portion; and a fuel gas supply pipe for supplying water evaporated by the evaporating portion; wherein the evaporating portion comprises a sloped plate for dispersing water supplied from the fuel gas supply pipe over the entire evaporating portion using capillary action.

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