Provided is a patch preparation that has improved adhesion to an adherend so as to enable a drug, especially, a systemically active drug to be stably and continuously administered over an extended period. The patch preparation has a layered structure comprising a patch layer including an adhesive plaster containing a drug and a patch support, and a cover layer in this order from a side attached to a skin. In the patch preparation, a buffer material is disposed between the patch support of the patch layer and the cover layer, the cover layer has a size covering an area beyond peripheral edges of the patch layer, and a shielding film is further disposed between the cover layer and the buffer material.