The solution for infants with diarrhea and swollen buttocks includes active treatment of diarrhea symptoms, local cleaning and disinfection, topical ointment application and general treatment to relieve the symptoms of swollen buttocks. 1. Positive treatment of diarrhea symptoms: If it is caused by indigestion, timely follow the doctor’s instructions to give probiotics, such as bacillus subtilis bacillus granules, auxiliary antidiarrheal medicine montelukast, to help improve the symptoms as soon as possible. Remember to follow the doctor’s instructions strictly. 2. Relieve the symptoms of red, swollen and painful buttocks: (1) local cleaning and disinfection: the buttocks of infants after diarrhea should be kept clean and dry, parents should give timely cleaning to avoid prolonged adverse stimulation to aggravate the above symptoms. It is recommended to use warm water to clean, to master the water temperature, to avoid causing burns to infants, and then use povidone-iodine disinfectant to disinfect the local disinfection regularly every day, to promote early recovery. (2) Topical ointment application: after local cleaning, disinfection and drying, antibiotic ointment, such as erythromycin ointment, should be applied as prescribed by the doctor when necessary to help improve the local discomfort. (3) General treatment: Infants should pay attention to maintaining a light complementary diet during treatment, and the indoor temperature should be appropriate. Try not to wear diapers for infants and pay attention to local clean and dry, which will help to recover as soon as possible. Infant diarrhea, buttocks red and painful there are other causes can be caused, such as enteritis, upper respiratory tract infection, etc., it is recommended that timely medical treatment. In addition, parents should strengthen the care of infants during diarrhea to reduce the incidence of the above symptoms.