Finger gray nail, also known as onychomycosis, is mainly caused by infection of candida, red trichophyton and other pathogenic bacteria, usually patients in the guidance of the doctor, commonly used in general treatment, drug treatment, surgical treatment and other treatments and other ways of treatment, only after the scientific and standardized treatment, it is possible to cure this disease. 1. General treatment: patients should keep the affected nails dry and clean in daily life, and cut the affected nails regularly. 2. Drug treatment: patients can follow the doctor’s instructions to use topical antifungal drugs such as cyclopyrrolate, amorolfine, etc., and can also take oral terbinafine, itraconazole and other drugs under the guidance of the doctor for treatment. After using drugs, especially oral drugs, patients may have adverse reactions such as liver function abnormalities, nausea, dizziness, etc. It is recommended that patients stop taking the drugs immediately and go to the hospital in time. 3. Surgery: The main surgical methods include nail removal and nail extraction, which are suitable for those with large nail size and poor efficacy of medication alone, and are less frequently used due to the pain of this treatment method. 4. Other treatments: such as photodynamic therapy, laser therapy, etc., usually combined with drug treatment, can play a better therapeutic effect. It is recommended that patients with onychomycosis go to the dermatology department of the hospital in time, and standardize the treatment under the guidance of professional doctors.