The present invention relates to an adhesive patch-containing package bag 1, having: a package bag 8 and an adhesive patch 10 stored inside the package bag 8, wherein the adhesive patch 10 has a backing 12, an adhesive layer 14 laminated on at least one side of the backing 12 and containing ropinirole and/or a pharmaceutically acceptable salt thereof, and a release liner 16 covering the adhesive layer 14, and a relative humidity at 4°C is maintained at 35% or higher inside the package bag 8.
