The treatment for nail separation, also known as onychomycosis, includes trauma management, diabetes control and anti-infection, etc. The treatment varies according to the cause of the disease. If the nail is separated from the flesh due to trauma, it is necessary to keep the area around the wound dry and clean in order to prevent infection. Generally, new nails will soon grow to replace the old ones, and localized growth is less likely to be deformed. If it is due to diabetes peripheral circulation is not good, resulting in malnutrition of the nails and the formation of nails and flesh separation, at this time you should strengthen the control of diabetes, comply with the doctor’s instructions to standardize the use of hypoglycemic drugs, such as metformin, etc.. If it is caused by infection, such as the more common onychomycosis, you can use antifungal drugs, such as salicylic acid ointment, clotrimazole cream and so on. The use of drugs need to be under the guidance of a professional doctor, not unauthorized use of drugs.