Anorectal pain is a symptom of pain around the anus and rectum, due to the rich nerves in the anal area, sensitive sensation, easily caused by the stimulation of pain, manifested as stabbing pain, swelling, pain, burning pain, etc., causing great pain to patients, a variety of anorectal diseases and mental and neurological factors can cause pain. 1, anorectal and surrounding inflammatory diseases such as anal sinusitis, anal papillitis, perianal abscess, anal fistula, external hemorrhoids inflammation; bacterial dysentery, amoebic dysentery, ulcerative colitis, etc., when their rectal lesions are heavy or their inflammatory exudates often stimulate the anus, can cause anorectal pain. 2, anorectal injury stimulation such as anal fissures, perianal skin fissures, anal foreign body injury; excessive consumption of chili peppers, spicy products such as wine, the stool contains irritating ingredients, can cause anal pain and discomfort. 3, sphincter spasm, such as anal fissure, internal hemorrhoids caused by spasm of the sphincter muscle to produce severe pain in the anus. 4, thrombosis, such as thrombosed external hemorrhoids, internal hemorrhoids thrombosis can cause pain. 5.Anal and surrounding tissues are compressed, such as advanced anorectal cancer, cervical cancer, prostate cancer, etc. 6.Neural, mental and blood flow factors Such as anorectal neurosis, pubic syndrome, postoperative scar of hemorrhoid fistula, etc.