Anal pain can be caused by mental factors, foreign body and bad diet stimulation, anal diseases, intestinal infections, anorectal tumors and other factors. 1. Mental factors: can be caused by mental tension, leading to anorectal neurosis, pubic nerve syndrome, etc., triggering anal pain. 2. Foreign body and bad diet stimulation: such as rectal foreign body, trauma, alcoholism, spicy food, etc., can stimulate the anus, triggering symptoms. 3. Anal diseases: such as sinusitis, anal papillitis, hemorrhoids, anal fissure, anal fistula, anal abscess, etc., can cause anal pain. 4. Intestinal infection: inflammation can produce anal stimulation, triggered by diarrhea, constipation and other symptoms, in the feces through the anus can also produce mechanical stimulation, induced anal pain. 5. Anorectal tumor: when the tumor directly presses or secondary infection, anal pain can be triggered, if the malignant tumor develops to the late stage, it can also invade the nerves and trigger severe pain. If the symptoms of anal pain are not relieved or accompanied by other discomforts, you should consult a doctor in time to find out the cause of the disease under the doctor’s guidance and carry out the corresponding treatment, avoiding blind judgment on your own, so as to avoid delaying the condition.