To provide a water recovery method for efficiently obtaining liquid water necessary for a power generation reaction even with high temperature emission gas.

In this water recovery method for the fuel cell power generator, water vapor in emission gas discharged from a fuel cell 20 is liquefied by a condensing means 33, and the liquid water W is fed to the fuel cell 20. Emission gas flow discharged from the fuel cell 20 is branched, and only the branched emission gas is guided to the condensing means 33 for liquefaction.