PROBLEM TO BE SOLVED: To provide a medicine volatilizing container making it possible to accurately determine the end time of volatilization of volatile medicine and an indicator making it possible to accurately determine the elapse of time. SOLUTION: An opening in a container body 2 is closed with a lid member 4 to form a closed empty space 5 inside it to accommodate the volatile medicine 6 (volatile substance) in the empty space 5. Once the volatile, medicine 6 (volatile substance) starts to volatilize as it penetrates the lid member 4, the internal pressure of the empty space 5 varies as the volatilization advances, and the lid member 4 expands as the internal pressure of the empty space 5 varies, and approaches the inner surface of the container body 2 at the end of the volatilization, the lid member 4 is set in a position where it is contacted with or spaced apart from the inner surface of the container body 2 by a predetermined interval. By viewing the degree of expansion of the lid member 4, the end time of the volatilization of the volatile medicine 6 and the elapse of time can be accurately determined.
