PROBLEM TO BE SOLVED: To provide an apparatus and method for producing hydrogen-containing liquid that can produce a hydrogen-containing liquid whose hydrogen concentration exceeds 6 ppm after 10 minutes, and exceeds 10 ppm after 24 hours.SOLUTION: Provided is an apparatus for producing hydrogen-containing liquid including: a hydrogen generating agent 11 that reacts with water to generate hydrogen gas； a capsule 20 for containing the hydrogen generating agent and discharging the internally generated hydrogen gas to the outside； and a container 30 for containing a liquid L to be added with the hydrogen gas generated inside the capsule, and in which the ratio (V/W) of the volume (V ml) of the capsule to the weight (Wg) of the hydrogen generating agent is set at 11.4 or less, more preferably 8.2 or less.SELECTED DRAWING: Figure 1【課題】１０分後の水素濃度が６ｐｐｍ、２４時間後の水素濃度が１０ｐｐｍを超える水素含有液体を生成することができる水素含有液体の生成装置及び方法を提供する。【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１１と、前記水素発生剤を入れ、内部で発生した水素ガスを外部へ排出するカプセル２０と、前記カプセルの内部で発生した水素ガスの添加対象たる液体Ｌを入れる容器３０と、を備え、前記水素発生剤の重量（Ｗｇ）に対する前記カプセルの容積（Ｖｍｌ）の比率（Ｖ／Ｗ）を１１．４以下、より好ましくは８．２以下とした。【選択図】 図１
