A novel aerosol jetting device which is easy to handle and excellent in insect pest control effect. An aerosol jetting device comprising a container, in which a liquid concentrate containing at least an insect pest control component and a jetting agent are sealed, and an operating unit having a valve stem projecting from the top end of the container and a passage fitted in the valve stem and providing communication between the valve stem and outside, and wherein the operating unit is manipulated to cause an aerosol in the container to be jetted outside and a substance jetted is such that an aerial concentration of the insect pest control component will not be reduced in a jet space for at least five minutes.