Once your baby has a red bottom, treatment is the key and timely application of ointment is not recommended. Ointments containing hormones are not recommended and can irritate your baby’s delicate skin. You can choose 5% tannic acid ointment, comfrey oil or natural buttock cream to apply on your baby’s red bottom. At the same time, you need to pay attention to hygiene, wash the buttocks in time, keep them clean and hygienic, apply local emollient oil and prickly heat powder for treatment, avoid the stimulation of urination and defecation, and you can stop using diapers temporarily first. It is best to let your baby’s buttocks dry in the air for a few more hours every day and let your baby’s buttocks sunbathe frequently to reduce the contact with urine. If it does not improve, you can refer it to the dermatology department of the hospital for treatment. Red buttocks, called diaper rash, is a common skin disease among infants, occurring in the baby diaper area refers to the limited patchy red spots or blisters that occur in the baby’s diaper bag area, and is an inflammatory skin lesion. There are many factors for the occurrence of diaper rash, the main one is that the skin of the buttocks is moist and hot for a long time, and the irritants in feces and urine can damage the skin and make the little buttocks red, and the secondary infection of bacteria, fungi and other microorganisms on the damaged skin will aggravate the degree of red buttocks.