Newborn baby’s skin is thin and tender, especially the small buttocks area wrapped in diapers, sometimes you will find the buttocks red. The main reason is that what is eaten is not digested, and the acidic products in the excreted stool are too much, which stimulates the skin to become red, and the treatment needs to start from diet. For example, the mother’s light diet, formula milk should be in accordance with the standard ratio; also pay attention to the newborn’s utensils, some with diapers are not particularly good quality, breathability is not good, poop, urine after not timely change, then poop, urine in acidic substances stimulate the baby’s skin, causing skin redness. The important thing is to clean the skin, change the diaper in time, clean the poop and urine with water, and replace it with a better quality diaper. Nowadays, the quality of baby diapers on the market is better, but we should also pay attention to the fact that some newborns are allergic to the diapers in them and need to be replaced with hypoallergenic brands that can protect the perianal skin of newborns.