A packaging bag 1 according to the present invention comprises a pair of packaging films 7x, 7y that are disposed facing one another, and are sealed together around a perimeter thereof so as to form a housing portion 9 housing a plaster. On one of the packaging films 7x is provided a protrusion 10 that protrudes toward the other packaging film 7y. When the plaster 2 is packaged, only the protrusion 10 of the packaging film 7x contacts a plaster body 5. The portion contacted by the protrusion 10 is a portion, on the inside of the plaster body 5, that excludes an outer periphery of the plaster body 5. Therefore, even if adhesive sticks out of the outer periphery of the plaster body 5, this adhesive does not contact the packaging film 7x. As a result, the plaster 2 can be easily removed from the packaging bag 1.