Provided is a superior heating tool which is capable of producing desired aromatic properties upon usage even after being stored for a long period of time. A heating tool comprising: an exothermic composition containing an oxidation accelerator having an iodine adsorption of not higher than 500 mg/g, an oxidizable metal powder, and water; and a fragrance, wherein at least the exothermic composition is housed in a container bag having air permeability.