Post-circumcision crusting off and yellowish-white trauma may be due to infection. Post-circumcision scabs off yellowish-white trauma may be due to bacterial infection caused by purulent discharge, you can use erythromycin ointment under the guidance of the doctor to apply, you can use iodine volts to disinfect before applying, to avoid water touching the infected area, to keep the local hygiene dry and clean. During the recovery period, wear some loose underwear, do not wear tight pants, such as jeans, and do not eat spicy and stimulating food, such as spicy hot pot, barbecue, chili peppers, kebabs and other food to maintain a light diet, and to avoid having sex.