There are two types of treatments for onychomycosis of the nails. The first is internal medication, and this is suitable for use in multiple nail onset. Oral terbinafine tablets 250mg daily for 6-12 weeks, itraconazole 400mg/day for 7 days with a 21-day break for a course of 3-4 treatments, or fluconazole 150mg 1-2 times a week for more than 4 months can cure more than 80% of onychomycosis and nail fungus. However, because these drugs must reach the nail plate where the fungus lives in order to have an antibacterial effect, the dosage is relatively large and the duration of administration is long, and it is important to monitor the adverse effects of the drugs regularly. There is also a topical therapy, topical therapy is the topical application of drugs and sealing the blood plasma and other methods, the use of nail files to thin the irregular bad nail, grinding nail cycle of 2 days once, in addition to the use of 30% glacial acetic acid topical application or 10% glacial acetic acid soak sick nail, once a day for more than 3-6 months. Before applying the medication, it will be better if the diseased nail is thinned first. Before applying the nail, pay attention to protect the skin around the nail with a mild ointment.