Baby butt eye red may be some physiological phenomenon, may also be the manifestation of certain diseases, such as diaper dermatitis, pediatric eczema, etc., should be timely consultation to identify the cause of the disease. 1. Physiological factors: consider the baby after the stool parents do not timely and thoroughly clean, there may be residual feces on the anus caused by stimulation, the phenomenon of red buttock eyes. 2. Pathologic factors: (1) diaper dermatitis can be due to the buttocks by urine, feces and unclean wet diaper stimulation, friction caused by the child is often manifested in the diaper contact with the local skin redness, and in severe cases, skin erosion and epidermal peeling. (2) pediatric eczema is generally believed to be related to genetic, environmental, immune factors, etc., the onset of the child’s skin will appear erythema, papules, papules, blisters, etc., often accompanied by itching. However, other factors can not be ruled out, it is recommended that parents should bring their children to the doctor in a timely manner, please ask the doctor to clarify the cause and give targeted treatment.