Patch containing packaging bag

The present invention aims at providing a patch containing packaging bag the patch containing bisoprolol in the adhesive layer can be stored stably. Packaging desiccant 1 of the present invention has a pair of laminated packaging material 7a which face each other, a packaging bag 8 made of 7b, the has been patch 10 accommodated in the packaging bag 8 inside the space. Patch 10 is provided with the laminated on one side substantially the entire surface of the support 12 Toko of the support 12 and the adhesive layer 14. Further, the adhesive layer is composed of pressure-sensitive adhesive composition containing a pressure-sensitive adhesive and bisoprolol or a pharmaceutically acceptable salt thereof. Furthermore, in the packaging bag 8, packaging desiccant 20 is accommodated. Then, in the patch containing packaging bag 1 having such a configuration, the relative humidity inside the packaging bag 8 is kept below 25%.