PROBLEM TO BE SOLVED: To provide a chemical volatilization device in which active ingredients of chemicals can be efficiently volatilized for a long term and effects such as preventing a pest can be exhibited according to types of the chemicals without including drive means such as a battery or a motor, and the device is manufactured simply and compactly.SOLUTION FOR THE PROBLEM: A chemical volatilization device stores a chemical volatilizer with a carrier carrying room temperature volatile chemicals in the inside of a storage container having an opening part, and the opening part is provided at least in the side surface part and front part of the storage container. The chemical volatilizer is swingably suspended in the inside of the storage container, and the swing angle of the chemical volatilizer is 0.05π(9°) to 0.5π(90°). The volatilization of the volatile chemicals contained in this chemical volatilizer is generated by the swinging of the chemical volatilizer, or the amount of the volatilization is i
