Nail fungus in the feet is caused by nail breakage when playing soccer and improper handling of the barbs around the nail with a nail clipper, resulting in local bacterial infection and nail fungus, the main symptoms of which are redness, swelling, pain and, in severe cases, pus. If the area is only red and swollen but not purulent, apply a hot towel to the affected area and then rub the area with erythromycin ointment or fusidic acid cream and take oral antibiotics to promote inflammation. If the pus has already formed, you need to go to the hospital for surgical treatment, cut and drain the pus-forming area, change the medication regularly, enter cephalosporin antibiotics intravenously, do not touch the water before the wound heals, and eat a light diet to prevent infection. Don’t cut your toenails too short, don’t tear them with your hands when barbs appear, it’s best to cut them off with scissors to prevent local infection, and avoid nail bed damage that can cause infection and lead to nail infection.