The pain is caused by the following reasons: 1. It may be caused by diarrhea, which is due to long-term diarrhea, and repeatedly wiping the anal area, making the anal area is relatively delicate skin, stimulated by the pain. 2. It may be caused by hemorrhoids, which is caused by the patient’s poor diet, and in serious cases, there will be redness, pain and itching in the anal area. The pain may be caused by a perianal abscess, which can cause localized redness, swelling and pain in the anal area, and fluctuating sensations due to the pus inside, and a hard touch when pressed. In addition, it does not exclude the pain caused by anal fistula, polyps, etc. It is best to go to the hospital anorectal specialist for further examination and then targeted treatment.