Infant perianal red and small red bumps, may be diaper rash, baby perianal eczema and other diseases caused by the usual use of medication to relieve symptoms. 1. Diaper rash: due to failure to change diapers, diarrhea and other reasons, resulting in perianal skin for a long time by feces, urine stimulation caused by the performance of diapers in contact with the skin pimples, blisters, erythema and other symptoms. Local topical zinc oxide cream can be used, when the condition is more serious, can be used externally dinexidine cream; if secondary bacterial infection, can be used externally mupirocin ointment. 2. Perianal eczema: Perianal eczema in infants may be related to heredity, inadequate perianal cleansing, food allergy, etc. It is manifested as erythema, papules and pimples in the perianal area. Can be used topically with zinc oxide ointment, Dinaid cream and so on. Infant perianal red and small red bumps, may also be caused by fungal infections, it is recommended to go to the hospital in a timely manner, to clarify the cause of the targeted treatment.