To provide a fuel cell generating apparatus which can be high efficient ly operated by effectively collection utilizing a loss generated in a power con verter using a water-cooled or liquid-cooled semiconductor element.

A cooling heat exchanger 21 for reform hydrogen gas fed to a fuel electrode of a fuel cell main unit 1 from a crude fuel reformer 2, cooling heat exchanger 22 for exhaust gas of an air electrode of the fuel cell main unit 1 and a cooler 32A of a power converter 31A using a water-cooled semiconductor element similarly to a cooling pipe of a cooling heat exchanger 23 for exhaust gas from the crude fuel reformer 2 are connected to an exhaust heat recovery device 40 through a pipe recirculating cooling water, heat generated by a loss is collected.