Baby’s buttocks are red, may be diaper rash, secondary infection, etc., do not always need to be treated with medication, according to the situation to take general treatment, medication, etc., if necessary. 1. Diaper Rash: The baby’s buttocks have delicate skin and improper care can easily lead to diaper rash. If the degree is mild, it can be relieved by general care. Such as wash the buttocks diligently, keep the buttocks dry. Diligent change of diapers, clothes should not be too tight, try to choose cotton, loose clothing, to avoid stimulation. If not relieved, you can use zinc oxide ointment and so on. 2. secondary infection: pediatric diarrhea and other diseases can be secondary to buttock red, when the cleaning method is not right or cleaning is not timely easy to appear buttock red. Bacterial infections can be treated with antibacterial ointment, such as mupirocin ointment. It is recommended to consult a doctor to identify the cause of the red buttocks, and then treat the baby positively. Use medication as prescribed by your doctor.