The redness around the anus of infants may be related to skin damage, excessive cleaning, improper diet, allergies and diarrhea, and parents are advised to strengthen daily care. Common causes 1, skin damage: too much force when wiping the anus, or too rough tissue, after repeated stimulation, can lead to skin keratin damage around the anus; 2, excessive cleaning: some parents too much cleaning, repeatedly scrubbing the infant’s anus many times resulting in skin keratin damage, skin barrier function is reduced, easy to cause infection; 3, improper diet: infants’ supplementary food contains irritating food, such as seafood, resulting in stool stimulation of the anus, causing skin redness; 4, allergies: the use of inappropriate tissues, diapers, or the use of soap and water to clean the buttocks, resulting in infant skin allergies; 5, diarrhea: infants with indigestion, causing diarrhea, can stimulate the skin and mucous membranes. Treatment 1, timely cleaning of the skin around the anus but should not be excessive. Use soft tissue when wiping the anus and move gently; 2. In case of skin allergy, use glyburide lotion as prescribed by the doctor; 3. When diarrhea occurs, medical treatment is needed, such as taking cefixime to fight infection and lactobacillin tablets to regulate intestinal flora as prescribed by the doctor. Reduce the number of diarrhea and reduce mucosal irritation. Attention During breastfeeding, the mother’s diet should be light, such as vegetables, rice porridge, avoid spicy and stimulating food, such as chili, seafood, etc. At the same time, a reasonable mix of baby’s supplementary food, should not be used to stimulate the food.