There is no good way to cure gray nails in the early stages, and they basically cannot be cured by themselves after they appear. Gray nails are mainly related to fungal infections, due to the invasion of fungi into the nail tissue may lead to nail damage, lesions, if not treated in time, may lead to the aggravation of gray nails, and generally will not be cured. After the appearance of gray nails, you need to use antifungal drugs under the guidance of the doctor, such as topical amorolfine application, oral itraconazole, terbinafine and other drugs, and regularly monitor the liver function during the use of drugs. In the course of treatment, we need to keep the local area clean and hygienic, avoid scratching and other causes of cross-infection.