Disclosed is an aqueous adhesive skin patch which contains ketoprofen as an active ingredient, can keep excellent transdermal absorbability and safety of ketoprofen, and has high storage stability. Specifically disclosed is an aqueous adhesive skin patch characterized by containing ketoprofen, an amine and polyethylene glycol, wherein the contents of ketoprofen, the amine and polyethylene glycol in an ointment thereof are 0.1 to 5 wt% 0.5 to 10 wt% and 5 to 30 wt% respectively, and wherein diisopropanol amine is used as the amine.
