Provided is a method for producing a hydrogen-containing liquid that is highly safe and in which hydrogen molecules are not substantially reduced. A hydrogen generating agent that reacts with moisture to generate hydrogen gas, a hydrogen gas permeable first container 11 in which a liquid 16 applied to a living body is enclosed, and the first container include A second container 12 having a hydrogen gas permeability lower than that of the second container 12 and a third container 13 capable of containing the hydrogen generating agent and water 15 and capable of discharging the hydrogen gas generated inside to the outside are prepared. After the water is stored in the third container and solidified, the hydrogen generating agent is stored in the third container, and the water stored in the third container is solidified, and the second container is filled with the second container. One container and the third container are accommodated to seal the second container. When using the liquid 16, the second container containing the first container and the third container is placed in an atmosphere in which at least a part of the water stored in the third container is melted, Hydrogen gas generated in the third container by the reaction with the hydrogen generating agent is discharged into the second container. [Selection] Figure 1【課題】安全性が高く水素分子が実質的に減ることのない水素含有液体の製造方法を提供する。【解決手段】水分と反応して水素ガスを発生する水素発生剤１４と、内部に生体に適用される液体１６が封入された水素ガス透過性を有する第１容器１１と、前記第１容器に比べて水素ガス透過性がそれ以下の第２容器１２と、前記水素発生剤及び水１５が収容可能であって内部で発生した水素ガスが外部へ排出可能な第３容器１３と、を準備し、前記第３容器に水を収容して凝固させたのち、前記水素発生剤を前記第３容器に収納し、前記第３容器に収納した水が凝固した状態で、前記第２容器に前記第１容器と前記第３容器とを収容して前記第２容器を封止する。液体１６を使用する場合は、前記第１容器と前記第３容器とを収容した前記第２容器を、前記第３容器に収納した水の少なくとも一部が融解する雰囲気に置き、融解した水と前記水素発生剤との反応により前記第３容器の内部に発生した水素ガスを前記第２容器の内部に排出させる。【選択図】 図１
