Redness around the baby’s anus is usually the result of fire or diarrhea, and babies can experience pain. It is not recommended to use ointments containing hormones, which can irritate the baby’s delicate skin. You can choose erythromycin ointment, gentamycin eye ointment, tea oil, comfrey oil, and erythromycin eye ointment for baby’s perianal redness. When applying the ointment, pay attention to the local application can not be applied up and down the cotton swab, so as not to aggravate the pain of the child, and even lead to peeling, should be used to roll the method of applying the medicine. Or use your fingers to gently rub the ointment evenly, and be able to massage the baby’s bottom at the same time. After applying the ointment, rub some talcum powder on the baby, which is effective and can make the baby feel dry. You can use a hot towel around the baby’s anus, about 5 minutes, 3 – 5 times a day, there will be improvement in a week or so. While applying the ointment, you need to pay attention to the hygiene of the buttocks, wash them in time, keep them clean and hygienic, apply local emollient oil, prickly heat powder and other treatments to avoid the stimulation of urination and defecation, and stop using diapers for a while. It is best to let your baby’s buttocks dry in the air for a few more hours every day and let your baby’s buttocks sunbathe frequently to reduce the contact with urine. If it does not improve, you can refer it to the dermatology department of the hospital for treatment.