FUEL CELL SYSTEM

A fuel cell system includes a fuel cell, an injection device configured to inject anode gas, an ejector mechanism through which the anode gas injected from the injection device flows, a circulation path configured to return the anode gas, discharged from the fuel cell, to the ejector mechanism, a supply path configured to supply the anode gas, discharged from the fuel cell together with the anode gas injected from the injection device from the ejector mechanism, to the fuel cell, and a controller.