To resolve problems in internal antifungal agents as a method of treating toenail fungus, such as concern for side effects, a long treatment period, inconvenience in continuous internal use, some patients who disagree with the agents, some medicines which can not be combined with the agents, necessity of regular blood examination.

A method is to directly remove toenail fungus from the surface of the nail without using an internal medicine. The surface of the nail is brought into contact with a file part in the representative drawing and lightly scrubbed up and down, right and left, an infected part by toenail fungus is shaved while making it powder, and the method is repeated until complete recovery. The nail file is used for shaving the surface of the nail while making it powder, as an apparatus of treating toenail fungus. Side effects and pain in treatment are absent, safety is high, the method of treatment is easy, therapeutic effects are confirmed in a short term, the implement of treating toenail fungus is very available and clean because of disposability, and a patient can select commencing time and ending time.