A fuel cell device including a fuel cell stack unit, a fuel reform unit, a material feed unit, a cooling water supply unit, and a control unit further includes a memory section, constructed of a rewritable memory, for storing information necessary for maintenance or inspection of the fuel cell device. The memory section is partitioned into a use environment information memory area for storing use environment conditions, a material feed information memory area for storing attribute information of the material feed unit, a fuel reform information memory area for storing attribute information of the fuel reform unit, a cell stack information memory area for storing attribute information of the fuel cell stack unit and a cooling water supply information memory area for storing attribute information of the cooling water supply unit.