An object of the present invention is to provide a packaging material that is capable of long term storage by preventing adsorption or transfer of an easily oxidizable component and an oily component in an adhesive of a patch to the packaging material, and also preventing discoloration and decrease in drug effect due to oxidization. The present invention provides the packaging material for a patch including: an inner layer made of polyethylene terephthalate having heat sealing properties; an oxygen-absorbing layer that includes an oxygen-absorbing resin having an unsaturated alicyclic structure as an oxygen-absorbing part; and an oxygen barrier layer made of aluminum foil as an outer layer.