PROBLEM TO BE SOLVED: To provide a volatilization container easy to operate from a tightly closed state of a container body at a pre-operation stage to the usable state thereof and also quickly settable to a volatilizable state.SOLUTION: There is provided a volatilization container for volatilizing a volatile agent, comprising a container 10 filled with a the volatile agent 22, an inside screw cap 40 covering the upper part of a mouth cylindrical part 14 in the container 10, and a topped cylindrical outside cap 50 which is detachably fixed to the container 10, covers the upper part of the container 10 and has a formed volatile hole 51a. The inside screw cap 40 has locking protrusions 43 protruded on the outer peripheral face of the cap, and is turnably movable together with the outside cap 50 by contacting with the locking protrusions 58 on the inner peripheral face side of the turning outside cap 50. When taking off from the container 10, the inside screw cap 40 and outside cap 50 screwed off from the contai
