If a routine stool result indicates a 3 plus fecal occult blood test, consider it to be a bleeding condition. The more common causes are bleeding hemorrhoids, bleeding from the small intestine and bleeding from the upper gastrointestinal tract. In addition, eating some animal liver, while nasal bleeding or hemoptysis into the stomach, through the intestinal excretion will also appear positive stool occult blood test. It is recommended that the bleeding point must be clearly identified, and electronic esophagogastroscopy, colonoscopy and small intestine microscopy can be improved to find the location of the bleeding. Also, if necessary, surgical, interventional, or hemostatic drugs should be actively applied to stop the bleeding. Only timely treatment can prevent the further development of the disease, otherwise, if there are repeated positive fecal occult blood tests, anemia, hemorrhagic shock and other more serious complications can occur.