A composite resin molded body containing: a base resin; and a plurality of fibrous fillers dispersed in the base resin, wherein the plurality of fibrous fillers each contain a volatile medicinal agent, when the composite resin molded body is 100 mass %, a content of the plurality of fibrous fillers each containing the medicinal agent in the composite resin molded body is 10 mass % or more and 99 mass % or less, a part of each of at least one of the plurality of fibrous fillers is exposed on a surface of the composite resin molded body, and at least a part of a surface of each of the plurality of fibrous fillers is coated with a hydrolyzable coating resin.