An object of the present invention is to provide apackaging material that is capable of long term storage bypreventing adsorption or transfer of an easily oxidizablecomponent and an oily component in an adhesive of a patch tothe packaging material, and also preventing discoloration anddecrease in drug effect due to oxidization. The presentinvention provides the packaging material for a patchincluding: an inner layer made of polyethylene terephthalatehaving heat sealing properties； an oxygen-absorbing layer thatincludes an oxygen-absorbing resin having an unsaturatedalicyclic structure as an oxygen-absorbing part； and an oxygenbarrier layer made of aluminum foil as an outer layer.
