1, the main cause of anal fissure is dry stool, the toilet struggle, the anus is torn by hard stool, and over time, the formation of chronic ulcers. Therefore, the stool should be kept open, after the formation of dry hard stool, do not struggle to discharge, you can choose warm saline enema, paraffin oil enema, or use the open plug injection in the anus, slippery defecation. 2, timely treatment of anal cryptitis, to prevent the formation of ulcers and subcutaneous fistula after infection. 3, women should pay attention to hygiene during menstruation, do not participate in heavy physical labor. During pregnancy, they should eat more fruits and vegetables to prevent constipation. Pay attention to protecting the perineum during childbirth and do not tear the perineum and anus. 4.Do not use rough force during anal examination such as anal finger diagnosis, anoscopy or other instruments to prevent damage to the anal canal causing anal fissure. 5, timely treatment of Crohn’s disease, ulcerative colitis and other intestinal diseases to prevent complications of anal fissure. The first thing to do for anal fissure patients is to keep the stool smooth and soft. If you’re looking for a new way to get the most out of your home, you’ll be able to get the most out of it. The majority of patients with anal fissures have habitual constipation, and often take laxatives such as fruit guide and rhubarb to make their stools thinner, which have the adverse effect of causing constipation after diarrhea, resulting in more and more anal fissures. The actual fact is that you can’t rely on laxatives to prevent constipation, but you must have a reasonable diet, a diverse diet, a variety of grains and cereals, fruits and vegetables are essential, especially foods rich in fiber. Patients with anal fissures should develop the habit of regular defecation in the morning because the upright reflex and gastrointestinal reflex after waking up in the morning can promote defecation. In addition, the morning to participate in a variety of physical activities, such as exercise, running, playing tai chi, qigong, etc., can prevent constipation and prevent anal fissures. After defecation, use warm water fumigation bath or fumigation with poison removal soup or pain relief like Shen Tang to keep the fissure wound clean, which is an important measure to prevent anal fissure. When fumigating, you have to dip your anus into the liquid in order to wash away the anal dirt, so that the drug can enter the anal canal and play the role of anti-inflammatory, pain relief and promote the healing of the fissure. The treatment of anal fissures must be early and timely. Most fresh anal fissures can heal within 1 to 2 weeks after treatment with internal Chinese medicine, external fumigation with Chinese medicine, and local dressing of the anus. Old anal fissures require surgery to cure. Therefore, once an anal fissure is detected, it should be treated as soon as possible. It should be treated as early as possible.