PROBLEM TO BE SOLVED: To provide a method for continuously dispersing hydrogen in a liquid solvent for a long period of time in a state of exceeding a saturated dissolution amount under a standard atmospheric pressure, in which the liquid solvent in which hydrogen is dispersed is a beverage or a liquid. It is a liquid solvent that can be the raw material, and provides a method capable of satisfactorily dispersing a large amount of ultrafine hydrogen bubbles in the liquid solvent for a long time. A method of dispersing hydrogen 15 in a liquid solvent for a beverage in excess of a saturated dissolution amount under standard atmospheric pressure, wherein a pressure P of a closed space 11 filled with hydrogen 15 is 0.28 MPa. A pressure adjusting means for applying pressure so that ≦P and a gas permeable means 14 formed of a polypropylene porous membrane for partitioning the liquid solvent and hydrogen are provided, and the gas permeable membrane is used to intervene. A method for dispersing hydrogen in a liquid solvent for beverage, wherein hydrogen 15 is dispersed in the liquid solvent in the form of ultrafine bubbles having a particle diameter of 1000 nm or less in a state independent of the liquid phase. [Selection diagram] Figure 1【課題】水素を、標準大気圧下における飽和溶解量を超過した状態で、長時間に亘り液体溶媒中に持続的に分散させる方法であって、特に、水素を分散させる液体溶媒が飲料液若しくはその原料となり得る液体溶媒であり、その液体溶媒中に良好に多量の極微細気泡の水素を長い時間に亘って分散することができる方法の提供。【解決手段】水素１５を、標準大気圧下における飽和溶解量を超過して飲料用の液体溶媒中に分散させる方法であって、水素１５で満たされた密閉空間１１の圧力Ｐが０．２８ＭＰａ≦Ｐとなるように加圧する加圧調整手段と、ポリプロピレン製の多孔質膜からなる気体透過膜から形成され、液体溶媒と水素とを仕切る気体透過手段１４とを備え、気体透過膜を介して、水素１５を、液体溶媒中に粒径１０００ｎｍ以下の極微細気泡の形態で液相と独立した状態で分散させる、飲料用液体溶媒中への水素分散方法。【選択図】図１
