The main consideration is that the anal pain is related to fecal retention, hemorrhoids, perianal abscess, anal papilloma and other diseases. 1. Fecal retention: If the patient is constipated for a long time, it will lead to dry stools, and after the rectum sucks up the water of feces, it is easy to lead to fecaliths, which will cause anal swelling and pain. 2. Hemorrhoids: hemorrhoid patients who have thrombosed external hemorrhoids, internal hemorrhoids embedded lesions, because the hemorrhoidal nucleus tissue edema, the lesion part of the tension rises, walking on the hemorrhoidal nucleus tissue extrusion, anal pain, swelling and other symptoms. 3. Perianal abscess: perianal infectious diseases, bacterial invasion of anal tissue can cause abscess formation, if the lesion is close to the anus, walking may be squeezed to the abscess, resulting in anal swelling, pain and other symptoms. 4. Anal papilloma: often secondary to anal fissure, anal sinusitis and other diseases, localized by long-term inflammation stimulation, can induce anal papilloma. When the lesion tissue protrudes from the anus, edema symptoms, walking can produce stimulation of the lesion site, thus appearing anal swelling, pain symptoms. If anal pain occurs for a long time and cannot be relieved, it is recommended to go to the hospital in time to find out the cause and then actively treat it, so as not to delay the condition.