A ropinirole-containing patch comprises an adhesive agent layer and a support layer, the adhesive agent layer containing ropinirole and/or a pharmaceutically acceptable salt thereof, wherein a content of the ropinirole and/or the pharmaceutically acceptable salt thereof in terms of free ropinirole in the adhesive agent layer satisfies the following two conditions: 5 to 13.2% by mass relative to a total mass of the adhesive agent layer, and 0.12 to 2.7 mg/cm 2 per unit area of the adhesive agent layer.
