Packing bag with patch

An object of this invention is to provide the packaging bag containing a patch which can preserve | save the patch which contains a bisoprolol in an adhesion layer stably. The packaging desiccant 1 of the present invention has a packaging bag 8 composed of a pair of laminated packaging materials 7a and 7b arranged opposite to each other, and a patch 10 accommodated in a space inside the packaging bag 8. The patch 10 includes a support 12 and an adhesive layer 14 laminated on substantially the entire surface of one side of the support 12. The pressure-sensitive adhesive layer is composed of a pressure-sensitive adhesive composition containing a pressure-sensitive adhesive and bisoprolol or a pharmaceutically acceptable salt thereof. Further, a packaging desiccant 20 is accommodated in the packaging bag 8. And in the packaging bag 1 with a patch which has this structure, the relative humidity inside the packaging bag 8 is maintained at 25% or less.