Patients with redness around the anus is first considered to be perianal inflammation, perianal inflammation is due to the moisture around the anus resulting in local bacterial infections caused by the summer anus local sweating, the activities of the process of friction between the skin on both sides of the anus, resulting in skin damage and infection triggered by the pain around the anus will be accompanied by the symptoms of the severity of localized ulcers, and even the formation of subcutaneous fistulas. Patients usually need to pay attention to keep the anus local dry, the anus local can use potassium permanganate, according to the quality of 1:5000 and water ratio, for sitz bath cleaning, with external antibiotic ointment, such as Baiduobang ointment or erythromycin ointment and so on. Normally, you should keep the bowel movement smooth, pay attention to the local cleanliness of the anus after defecation.