Fungal infection of the nails is called onychomycosis, and the treatment of onychomycosis is divided into two methods: topical medication and internal medication. For external medication, topical amorolfine can be used once a week for 6 months, or topical ciclopirox can be used once a day for 4-6 months. For internal medication, itraconazole capsules can be taken orally, 0.2g once, twice a day, for one week and three weeks, for 2-3 months; terbinafine hydrochloride tablets can be taken orally, 0.25g once, once a day, for 2-4 months. for 2-4 months; oral fluconazole capsules, 150mg once, once a week, for 18-24 times.