PROBLEM TO BE SOLVED: To provide an aromatic container including a container and a case, in which the container with high sealing strength can be simply unsealed without causing a trash from a sealing function part, by releasing the seal of the container to allow the aromatic to be diffused by means of mounting of the container onto the case.SOLUTION: A sheet shape cover 13 which seals an opening of the container 1 containing the aromatic, has a multilayer structure of a permeation sheet 14 and a seal film 15. The seal film 15 is broken by detachably mounting the container 1 onto the case 22 to form a break hole 16, and the aromatic fed to the permeation sheet 14 exposed to the break hole 16 through a permeation wick 9 prepared in the container 1, is permeated into an air-diffusion sheet 17 to be diffused into the atmosphere. The size of this air-diffusion sheet 17 can be freely set without being restricted by an opening of the container 1, so that it becomes easy to set a diffusion capacity of the aromatic approximately in a desired state.