Yeast infection gray nail often refers to nail fungal disease caused by yeast infection, which can be cured by general treatment, medicine and surgery, but the specific efficacy varies from person to person. 1. General treatment: pay attention to the cleanliness and hygiene of the affected area in daily life, and change socks frequently. 2. Medication (1) Local medication: Before using medication, you can use a knife to remove the nail as much as possible, and then use tincture of iodine or glacial acetic acid solution externally. Some patients can also use urea ointment for sealing treatment, so that the nail is softened and then peeled off. Combined with topical antifungal agents such as amorolfine application for treatment. (2) Systemic medication: Itraconazole, terbinafine, etc. are commonly used. (3) Surgical treatment: less frequently used, mainly used for those with severe symptoms and unsatisfactory drug treatment. Nail extraction can be performed, etc. All of the above drugs should be used under the guidance of a doctor. Patients are advised to go to the hospital in time and follow the doctor’s instructions.