Athlete's foot is caused by a fungal infection, and soaking feet in salt and white vinegar does not have a special therapeutic effect on it. Although it can relieve itching or local bacteria on the foot surface, it is ineffective against fungi. Currently, the most effective treatment for athlete's foot is the application of antifungal creams, such as naftifine ketoconazole ointment. Generally, the medication needs to be applied continuously for at least one month, or until the symptoms have completely disappeared, followed by an additional half a month of medication to completely kill the deep-seated fungi and prevent the condition from recurring. Be sure to use separate foot basins or towels at home to avoid cross-infection among family members. Do not indiscriminately share slippers and try to avoid wading in dirty water on rainy days. Always sun-dry shoes and socks at home to disinfect them.