Provided is a volatile composition having a small difference in volatilization amounts of a volatile substance within a wide temperature range from the normal temperature and enabling the control of the volatilization amount even at a high temperature by suppressing the volatilization amount of the volatile substance and by increasing the gel strength of the volatile composition. Specifically provided is a volatile composition comprising an alkyl cellulose having such a viscosity that a viscosity at 20°C of a 1% by weight aqueous solution of the alkyl cellulose is 4,000 to 11,000 mPa·s as determined by a Brookfield viscometer and having such a storage elastic modulus that a storage elastic modulus G'(65°C) at 65°C of a 1.5% by weight aqueous solution of the alkyl cellulose is 3,000 to 4,500 Pa； a volatile substance； and a solvent.
