A swollen nail finger can be soaked in warm water to increase circulation and help fight off infection. Sometimes an incision and drainage is needed, and adequate drainage can be treated without antibiotics. If the infection spreads, oral antibiotics can be given. If caused by a fungus, drainage should be performed and a cream containing ketoconazole, cycloheximide, ethanolamine, or miconazole and a warm water soak should be applied, and in severe cases oral antifungal medication may be given. In addition, antibiotic ointment can be applied. If this is not possible, go to the hospital for incision and drainage, and apply sensitive antibiotics for treatment. Such as azithromycin, cotrimoxazole, levofloxacin. Those who have no history of penicillin allergy can choose cefradin capsules, cefixime, etc. The local area should also be soaked in warm water with potassium permanganate, disinfected with iodophor, and topical application of Bactrim or ichthyolite ointment. If there is no obvious local suppuration, blood can be released by needling, and if there is pus formation or conservative treatment is ineffective, timely surgery should be considered.