Introduction: First of all, the medical blood in the stool is divided into the following categories: blood in the stool is generally divided into the upper gastrointestinal bleeding and lower gastrointestinal bleeding, blood color is bright red, then most commonly seen in the lower gastrointestinal bleeding, anorectal lesions of the blood in the stool is most likely to be hemorrhoids, but there is also rectal cancer, rectal polyps, fissures, ulcerative colitis and other anorectal diseases will be blood in the stool, the following is to talk about how to prevent bleeding in the stool. 1, do not squat toilet too long Every time you sit on the toilet time is best not more than 5 minutes, especially do not read while the toilet, which is extremely unhygienic habits. 2, clean When you finish defecating, your responsibility is not yet over. The anus should be gently cleaned, this is quite important. Some toilet paper is rough and some contains harsh chemicals. You should use colorless (white), odorless toilet paper. It is best to install a body cleanser at home, each time after the stool, rinse with warm water, on your hemorrhoids is very beneficial. 3, do not sit still for a long time Do not sit in a chair for hours on end, even if you have to, you should get up and move around for at least 5 minutes every hour. 4, avoid tobacco, alcohol, stimulating things tobacco, alcohol or stimulating food can aggravate intestinal mucosal congestion and edema, make the blood in stool aggravation, so the blood in stool patients should avoid tobacco and alcohol during the treatment, should eat light and easy to digest food. Therefore, patients with blood in stool should avoid smoking and alcohol during the treatment period, and eat light and digestible food. If the amount of blood in stool is large, the patient should rest in bed, eat liquid food or diet with less slag, and if necessary, fasting should be done to reduce the stimulation of the digestive tract. Avoid the use of blood-activating drugs Patients with blood in stool should avoid the use of blood-activating drugs in the process of treatment, so as not to cause more than the bleeding phenomenon. In addition, some patients with hypertension, arteriosclerosis and embolism take blood-activating and blood-stasis-removing medicines for years, such as Salvia divinorum tablets, aspirin and some anticoagulants, etc., and should suspend the use of blood-activating and anticoagulant medicines when there is blood in the stools, otherwise the effect of hemostasis will not be good.