The reasons for this situation are generally divided into the following areas: First, it may be because of suffering from hemorrhoids. Second, it may be the relaxation of the anal muscle. Third, it may be a lesion in the rectum. It is recommended to go to the hospital for medical diagnosis, and according to the diagnosis results for the corresponding treatment. If you have anal sinusitis, you can treat it by taking a sitz bath with potassium permanganate solution flushed with warm water. Or take oral metronidazole and levofloxacin capsules for medication relief. Pay attention to cleanliness and hygiene during the day to keep the anus clean. Wash your anus with warm salt water every day and it will improve after a period of time. You should also pay more attention to your diet. Try not to eat greasy, spicy and irritating food, which can irritate the anus, but eat light and less irritating food. If possible, it is recommended to wash the anus and its surroundings with warm water after a bowel movement.