The clinical symptoms of anal fissure are pain and bleeding. The pain is characteristic, i.e., it starts with a sudden cut-like pain during defecation (due to feces cutting through the skin of the anal canal), then relieves briefly, followed by prolonged anal pain. If anal fissures are not treated in time, three kinds of conditions may appear: anal canal ulcer (fissure fibrosis, also known as old anal fissures), anal papillary hypertrophy (polypoid tumor), and sentinel hemorrhoids (dermal hyperplasia), which may also develop into anal sinusitis (chronic inflammation of the anus) and anal fistula (septic inflammation of the anus). The first three conditions are called the “five features of anal fissure”. There is also the possibility of becoming anal canal cancer due to long-term chronic inflammatory stimulation. Early prevention and treatment of anal fissures should be advocated. Some people have never suffered from anal fissures in their lives because of their experience in keeping their stools soft, having a regular bowel movement on time, and not having bad habits of squatting for a long time. This is the fundamental way to prevent anal fissures. Early onset anal fissures can be completely cured by conservative treatment. For example, the use of coarse fiber diet or laxative drugs to soften the stool, with external drugs such as 2% raw skin nitrate water or hemorrhoid bath hot bath, Huanglian cream, Jiuhua cream, etc., if at the same time ask a specialist to help on the drainage strips, the recovery is faster, usually a week to cure. For chronic and recurrent anal fissures, it is advisable to perform surgical treatment or Chinese medicine. Manual treatment, i.e. anal dilation, can heal old anal fissures. The TCM surgery is divided into ligation, hanging thread, and lateral incision, which are chosen by the doctor according to the condition and can cure the “five characteristics of anal fissure.” The treatment of anal fissure in TCM has many original ideas not only in surgical techniques, but also very rich medical experience in drug treatment. 1, dry fire stool knot: general symptoms are seen in the stool hard and dry knot, feces anal pain, slightly relieved after the stool, and then can continue to pain for several hours, or even the whole day pain does not decrease, when the stool blood followed, mostly in the form of drops. The painful dryness of the stool often prevents him from eating normally, and is accompanied by distraction, bitterness of the mouth and dryness of the throat, yellow coating on the tongue and a number of pulses. The evidence is: dry fire stagnation, knotted in the intestines. Treatment: It is advisable to clear heat and fire, moisten the intestines and open the bowels. The formula: Gardenia jinhua pill, or use this formula with addition and reduction. Externally, fumigate with toxin elimination soup, apply raw muscle yu red cream in the wound. 2, damp-heat conjugation: abdominal pain and discomfort during defecation, unpleasant defecation, anal swelling, sometimes with mucus and fresh blood, or may be with pus and blood, yellow and thick greasy coating. The evidence is: damp-heat injection, contained in the anus. Treatment: Clearing damp-heat, moistening the bowels and relaxing the bowels. Recipe: Huanglian Tang with reduction for internal use. External use of four yellow cream on the anal fissure. 3. Blood deficiency and intestinal dryness: pain in the anus during defecation, bleeding, constipation, dry skin, dry mouth and tongue, distress and insomnia, afternoon hot flashes, red tongue with little coating and thin pulse. Indication: Blood deficiency, intestinal dryness, knotting and fire. Treatment: Cool the Blood, nourish the Blood, moisten the dryness and open the bowels. Recipe: Ma Ren Run Intestinal Pill, or Ji Chuan Decoction can be used.