The newborn’s buttocks are rotten, mainly related to the newborn’s own delicate skin, but also related to improper care, mainly because the diapers or diapers are not changed in time, resulting in skin ulceration in the area. After this happens, the first thing to do is to wash the buttocks 2-3 times a day, and then apply pine pollen or comfrey oil, or epsom acridine solution, which can protect the newborn’s buttocks. If the buttocks are rotten more, there may be infection, redness and swelling, at least apply some anti-inflammatory ointment and salve, such as erythromycin ointment or Bactrim ointment. Therefore, after a newborn’s bottom is rotten, the main thing is to pay attention to changing diapers and nappies in time and to take good care of the buttocks.