This kind of patients I often encountered in the clinic, the reason is no other than the body changes do not pay attention to or hold a fluke that they will not be so unlucky to get cancer, but science is science, found that the blood in the stool must be the intestinal problems, must pay attention to. Blood is discharged from the anus, stools with blood, or all bloody stools, the color is bright red, dark red or tar-like, are called blood in the stool. Blood in stool is usually seen in lower gastrointestinal bleeding, especially bleeding from the colon and rectum, but occasionally upper gastrointestinal bleeding is seen. The color of the blood in the stool depends on the location of the gastrointestinal bleeding, and is often seen in hematologic and other systemic diseases. For example, leukemia, disseminated intravascular coagulation, etc. Bleeding caused by lesions in the digestive tract (including the jejunum, ileum, colon and rectum) below the flexural ligament is lower gastrointestinal bleeding. In particular, blood in stool without abdominal pain and anal pain is mostly seen in colorectal tumors. For colorectal tumors, it is necessary to have early and standardized treatment in order to obtain a relatively good therapeutic effect. The first line of defense is regular medical checkup. After a person reaches forty years old, it is necessary to do colonoscopy once every one to two years. The second line of defense is to go to the hospital as soon as you notice a change in your bowel habits and stool characteristics. The appearance of blood in the stool has reached the late stage of the disease, need to quickly seek medical attention. The third line of defense is the need to go to a regular hospital, find a specialist doctor, so as not to delay the condition. The second is early treatment and standardized treatment. The treatment of colorectal tumor includes endoscopic treatment, minimally invasive laparoscopic resection treatment, chemotherapy, radiotherapy, biological treatment, traditional surgery if the tumor is too big, etc. Laparoscopic and endoscopic treatment of colorectal cancer has obvious advantages, and it is the prevailing surgical method at home and abroad in the past 20 years, and then combined with radiotherapy, the best therapeutic effect will be obtained.