To reduce power consumption required for circulation of a hydrogen- containing gas in a hydrogen supply system which uses a high-pressure hydrogen gas storage container.

In the hydrogen supply system 10, the hydrogen-containing gas is circulated by a circulation pump 51 when a required amount of hydrogen gas circulation VH is not greater than a first circulation amount V1. When the amount of required hydrogen gas circulation VH exceeds the first circulation amount V1, a first control valve 522 is opened so that a first ejector 52 circulates the hydrogen-containing gas in the circulation amount of V1, and the circulation pump 51 circulates the hydrogen-containing gas in a circulation amount of V1 to V2. When the required hydrogen gas circulation amount exceeds the amount V2, a second control valve 532 is opened in addition to the first control valve 522, so that the first and second ejectors 52, 53 circulates the hydrogen-containing gas in a circulation amount of V1+V2, and the circulation pump 51 circulates the hydrogen-containing gas in a circulation amount of V2 to V3.