PROBLEM TO BE SOLVED: To provide a hypochlorous acid semi-fluid composition for sterilization, provided with a stable duration method, able to be moisturized, lubricated, protected and restored, safe, and lasting long, and to provide a method of use thereof.SOLUTION: The invention provides a semi-fluid composition used for moisturization or sterilization which contains moisture, hypochlorous acid, a thickener, a lubricant, and a water retention agent. The moisture, the hypochlorous acid, the thickener, the lubricant, and the water retention agent, are mixed and stirred to become a hydrogel body or a viscous body. The invention also provides a method of performing lubrication, moisturization, disinfection, and sterilization using the semi-fluid composition for a subject which is an adult goods or medical supply, by making the subject contain an effective amount of the semi-fluid composition or applying it to a surface of the subject.【課題】安定した持続方法、保湿、潤滑、保護及び修復ができ、安全で長持ちする滅菌用の次亜塩素酸半流体組成物及びその使用方法の提供。【解決手段】水分、次亜塩素酸、増粘剤、潤滑剤及び保水剤を含み、前記水分と、前記次亜塩素酸と、前記増粘剤と、前記潤滑剤と、前記保水剤と、が混合し撹拌されてハイドロゲル体や粘体になることを特徴とし、保湿や殺菌に使う半流体の組成物、有効量の半流体の組成物を対象に含有させ、または前記対象の表面に塗布し、前記対象がアダルトグッズまたは医療用品であることを特徴とする半流体の組成物を使用する潤滑、保湿、消毒や殺菌を行う使用方法。【選択図】なし