PROBLEM TO BE SOLVED: To provide a container for a volatilizing agent where the variation of a gradual release amount due to environmental conditions is little and which is safely disposable.SOLUTION: A container 1 for a volatilizing agent where the volatilizing agent G containing at least a gas or a liquid and having volatility is filled at a higher pressure than external pressure and the filled volatilizing agent G can be gradually released outside comprises: a rubber-like elastic bag body 20 where the volatilizing agent G can be filled and pores 23 capable of gradually releasing the volatilizing agent G are disposed on a wall 21 and a valve 13 which is disposed at the opening side of the rubber-like elastic bag body 20 and where the volatilizing agent G can be taken in and out to the inside and outside of the rubber-like elastic bag body 20.
