The actual banana’s inner skin is scraped down and put on the flat warts effectively not really, the banana’s inner skin contains pyrope, on the bacterial, fungal infection has the inhibiting effect, but for the viral infection caused by the flat warts is no effect. The pycnogenol in the inner skin of bananas can inhibit the growth and reproduction of bacteria and fungi, but it is usually ineffective for viral infections. It is recommended that after the appearance of flat warts, timely to the hospital for examination, under the guidance of the doctor to take the topical ointment, cryotherapy, laser therapy and other methods of treatment, usually pay attention to the affected area of cleanliness and hygiene, to avoid contact with infected to others.