Bleeding in the stool is very common in people’s daily life. Many patients are alarmed to see blood in the stool, worrying whether they have cancer or not, while some patients feel that blood in the stool is mostly hemorrhoids, which is irrelevant. The correct treatment of blood in the stool is responsible for their own health. Today we will talk about blood in the stool, what should we do? First of all, blood in the stool, usually have to distinguish, the color of the bleeding, if the color black or tarry, in the absence of medication under the influence of some drugs (such as iron, bismuth, etc.), more than considering the upper gastrointestinal bleeding, such as gastric ulcers, duodenal ulcers, at the same time more than a combination of gastric pain, gastric distention, acid reflux, heartburn and other gastric symptoms, at this time you should go to the hospital Gastroenterology Department for medical treatment. If the stool bleeds bright red, mostly consider the lower gastrointestinal bleeding, a small number of upper gastrointestinal bleeding can also occur when the amount of blood in the stool. The causes of lower gastrointestinal bleeding are as follows: 1. Intestinal tumors: including colorectal cancer, intestinal lymphoma, small intestinal smooth muscle tumors, with colorectal cancer being the most common one. Usually, this kind of disease can be combined with change of bowel habit, increase or decrease of stool frequency, change of stool traits and shapes, occasional abdominal pain, and emaciation. 2, intestinal polyps: mostly occurring within 40 years of age, children are also common, blood more attached to the surface of the stool, a few bleeding more. 3.Inflammatory bowel disease: there is a history of diarrhea, mucous blood stool or purulent stool before bleeding, preferred in the age of 20 to 50 years old, mostly characterized by abdominal pain relief after defecation. Acute necrotizing enterocolitis has four main symptoms: abdominal pain, diarrhea, blood in stools and toxemia, and the blood stools are dark red or bright red paste, and sometimes the bleeding is quite serious. Patients with ulcerative clonus may have blood in the stool, and bleeding is often preceded by low-grade fever, diarrhea, abdominal pain and tenderness. 4, colonic diverticulum: bleeding rarely occurs, unless accompanied by diverticulitis, one of the common causes of lower gastrointestinal bleeding in the elderly, mostly acute, 75% of cases bleeding can stop on its own, recurrence rate is very low. 5, colonic vascular dysplasia: seen in the elderly over 60 years old, mostly located in the cecum and ascending colon, bleeding is generally not much, but easy to recur. 6, intestinal vascular malformation: mostly occurring in the esophagus, rectum and small intestine in the middle section is more common. Hereditary hemorrhagic capillary dilatation, manifested as dilatation of capillaries in skin, mucous membranes and visceral organs, resulting in recurrent bleeding. The initial bleeding symptom is epistaxis, and about 15% of patients present with intestinal bleeding symptoms at the age of 30-40 years. 7.Colonic ischemic disease: mostly accompanied by fever, abdominal pain, diarrhea and colorectal bleeding from a small amount to a large amount, in the elderly to systemic atherosclerosis or coronary artery ischemia caused by myocardial insufficiency is common. 8, portal hypertension rare parts of the varicose veins: occasionally can occur from the jejunum to the rare parts of the rectum, at the same time there is hepatosplenomegaly and other manifestations of portal hypertension. 9, anal diseases: such as anal fissure, combined with repeated rhythmic anal pain, mostly due to dry stools or too many times due to stool; mixed hemorrhoids, mostly accompanied by anal swelling prolapse, post-stool bleeding drips or jets, after standing bleeding can be stopped, stool does not mix with blood, more attached to the surface. If you have any of the above symptoms of blood in stool, you can go to the anorectal department or gastrointestinal surgery department of the hospital. In short, blood in the stool, do not panic, but also can not be left unattended, timely hospitalization, is the best choice.