Provided is an aqueous hypochlorous acid solution that has an excellent bactericidal effect and high safety. In the aqueous hypochlorous acid solution according to the present invention that has a pH value within the range of 5.5-6.5, starting materials are dissolved exclusively in purified water specified by Japanese Pharmacopeia. The starting materials are sodium hypochlorite for food additives and dilute hydrochloric acid specified by Japanese Pharmacopeia. The pH value of the aqueous hypochlorous acid solution is preferably 6.3.
