To provide a hydrogen injecting apparatus capable of generating hydrogen water which is capable of flexibly adjusting the hydrogen content, which is excellent in working efficiency and hygiene at the time of maintenance.SOLUTION: The hydrogen injector of the present invention comprises a reference vessel on which a particulate matter having on the surface a substance having a hydrogen generating reaction with water is placed on the bottom part and further storing water for hydrogen reaction, and the reference vessel is sealed Communicating means for fluidly connecting the upper interior thereof with the beverage reservoir in a state of being in contact with the drinking water storage means and auxiliary means for enhancing hydrogen injection from the reference vessel to the beverage reservoir via the communicating means .(FIG.【課題】本発明はメンテナンス時の作業効率や衛生面が良好であり、水素含有量を機動的に調整しうる水素水を生成することのできる水素注入装置を提供する。【解決手段】本発明の水素注入装置は、水と水素発生反応する物質を表面に有する粒状物を底部に載置し、さらに水素反応用の水を貯留させる基準容器と、該基準容器は密封状態でその上方内部と前記飲料用貯留水とを流体的に接続する連通手段と、該連通手段を介して前記基準容器から前記飲料用貯留水への水素注入を増強する補助手段と、を備える。【選択図】図1