Baby butt cracks can be disinfected with iodine povidone, and at the same time ensure that the wound is clean and dry, and take good topical care of the skin. Baby’s butt cracks are usually caused by improper bowel cleaning, humid environment, and constant friction. First of all, you can carry out local cleaning, and then use iodophor to disinfect. You can use diapers instead of nappies, and keep the environment of the wound dry and avoid moisture. If the broken skin is serious, you should also go to the hospital for treatment. Daily attention should be paid to the timely cleaning of urine and feces, good care of the perianal skin, avoid the wound contact with water to avoid infection, ensure that the wound is dry. If the baby’s butt crack skin does not get better, or accompanied by other symptoms, you should go to the hospital in a timely manner, to give targeted treatment or treatment.