Baby red buttocks serious more than a week not well, may be related to diaper dermatitis, eczema or prickly heat and other causes, need to clarify the cause of the targeted treatment, for example, through the general treatment, topical medication or systematic use of medication and other methods of treatment. 1. Diaper dermatitis: pay attention to changing clean diapers in time, and keep the buttocks dry; saline can be used to wipe the affected area, according to the state of the rash, choose glycerine lotion, glucocorticosteroid preparations, etc. for local anti-itching and anti-inflammatory. 2. Eczema: pay attention to keep the temperature appropriate, let the child wear breathable, loose clothing; children’s local skin lesions can choose weak or moderate glucocorticosteroid and other drugs for treatment; if there is a serious itching affects sleep, can be given antihistamines such as loratadine. 3. prickly heat: keep the skin clean and dry, and pay attention to ventilation and heat dissipation; can be used externally to stop itching and astringent glycerite lotion, if the occurrence of pus prickly heat need to use antibiotics to prevent and treat infections, such as cefixime and so on. If the baby’s red bottom continues to be unrelieved, it is recommended to consult a doctor, use medication under the doctor’s guidance and pay attention to local care. All of the above medications should be used under the guidance of a doctor.