Rotting feet, commonly referred to in clinical practice as impregnated vesicular pediculosis or tinea pedis, is a fungal infectious skin disease. In severe cases, it is recommended to go to a hospital for a fungal culture to be able to specify the type of fungus that is infecting the foot, so that medication can be targeted. It is usually curable but not curable because the infection can reappear after it is cured. When the patient’s feet blister, peeling, or even vesicular oozing, combined medication should be used under the guidance of a doctor. Common oral medications include itraconazole, terbinafine, and topical medications include clotrimazole, econazole, miconazole, bifenocarbazole cream, various preparations of undecylenic acid and glacial acetic acid. If foot odor is secondary to bacterial infection, local wet compresses with ezacridine or potassium permanganate solution can be used, and oral antibiotics are also needed for systemic antibacterial treatment. Patients with rotten feet should pay attention to keep their feet as dry as possible during treatment, wear breathable shoes and socks to avoid more foot sweat to provide a favorable environment for epidermal fungal infection. The impregnated erosive foot fungus between the toes is prone to recurrence, so consider wearing five-finger socks to keep the feet clean and dry, and you need to pay attention to avoid sharing slippers, foot soaking tubs, towels and other household items with others to avoid causing cross-contamination.