HYDROGEN GENERATION DEVICE AND FUEL CELL SYSTEM

A hydrogen generator (100) includes: a reformer (3) configured to generate a hydrogen-containing gas by using a raw material; a hydro-desulfurizer (2) configured to remove a sulfur compound in the raw material; a recycle passage (8) through which the hydrogen-containing gas is supplied to the raw material before the raw material flows into the hydro-desulfurizer (2); a booster (1) configured to supply the raw material to the reformer (3); a raw material supply passage (5) through which the raw material to be supplied to the reformer (3) flows; and an ejector (9) which is disposed on the raw material supply passage (5) provided downstream of the booster (1) and upstream of the hydro-desulfurizer (2) and into which the hydrogen-containing gas flows from the recycle passage (8).