The purpose of the present invention is to secure the surface area of a structure containing a volatile medicinal agent to thereby prevent the reduction in the volatilization volume of the volatile medicinal agent even when the whole size of the structure is reduced, and to reduce the surface area of a portion of the whole surface of the structure which can contact with the inner wall of a container as possible to thereby avoid the prevention of the volatilization of the volatile medicinal agent and prevent the contamination of the container. A structure containing a volatile medicinal agent is used, which is a three-dimensional structure produced by shaping each of rod-like bodies into a wavy form to produce multiple wavy bodes and then joining the multiple wavy bodies to each other with the multiple wavy bodies being crossed each other at top parts thereof, wherein the three-dimensional structure is formed using a resin composition containing a volatile medicinal agent having a volatile property so that the volatile medicinal agent kneaded into the three-dimensional structure can bleed out on the surface of the three-dimensional structure and can be volatilized from the surface.
