Children’s perianal redness, swelling and pain may be caused by eczema or frequent diarrhea, etc. It is necessary to clarify the cause of the disease in order to use symptomatic medication. 1. Eczema: due to the hidden location of the anus, not ventilation, easy to moisture and other reasons, easy to cause eczema, it is recommended to apply local eczema medication for treatment, such as zinc oxide ointment, dexamethasone ointment and copper zinc sulfate ointment. If the symptoms are more serious, it is recommended to apply topical hydrocortisone butyrate cream, which can effectively treat eczema type of skin diseases caused by non-infectious factors. 2. Frequent diarrhea: If the frequent and loose stools are caused by improper diet, it is easy to cause redness, swelling and pain of the skin around the anus. It is recommended to wash the skin and then apply local oily ointment for treatment, such as ellagic acid ointment, which has an astringent effect and prevents bleeding, thus protecting the skin. Consult your doctor before using the medication and use it under his/her guidance, do not use the medication blindly to prevent aggravation of the condition.