The object of the present invention is to provide an olfactory disturbance therapeutic agent that is effective in repairing or regenerating olfactory epithelium that suffered damages such as scratches and can be administered for a long time.The object of the present invention is achieved by an olfactory disturbance therapeutic agent including at least one active ingredient that is selected from among a group consisting of insulin, insulin analogs, and insulin secretagogues. Preferably, the olfactory disturbance therapeutic agent is used for people with olfactory disturbance who have, or are at risk of having, impaired insulin secretion or insulin resistance, or for people who could suffer an iatrogenic increase in blood sugar level or a disturbance in a balance of adrenocortical hormone stemming from a long-term use of steroid as olfactory disturbance treatment.
