There is provided a process for producing hydrogen-containing water for drinking, by which the dissolved hydrogen concentration of the obtained hydrogen water can be more efficiently increased. A process for continuously producing hydrogen-containing water for drinking, comprising (a) a purifying step of filtering and purifying water as a raw material (b) a degassing step of degassing the purified water supplied to a degasser (c) a hydrogen-dissolving step of dissolving hydrogen gas in the degassed water supplied to a hydrogen dissolution device (d) a sterilizing step of sterilizing the hydrogen-dissolved water supplied to a sterilizer (e) a filling step of filling the hydrogen-containing water supplied to a filling device in a sealed container and transferring the filled water product to a heat sterilizer and (f) a heat-sterilizing step of heat-sterilizing the water product supplied to the heat sterilizer, wherein part of the hydrogen-containing water obtained in the step (d) is returned to the degasser in the step (b) and the water is circulated through the steps (b) to (d).
