Generally speaking, when patients find blood in stool, it may be rectal cancer or hemorrhoids, which should be judged according to the patient’s bleeding color, symptoms and relevant examination. If the patient has blood in stool, the color of blood is dark red, and the blood is mixed with stool, and the body often has abdominal pain, bloating, diarrhea, abdominal discomfort, etc., then the blood in stool may be caused by rectal cancer, and the diagnosis can be confirmed through colonoscopy and pathological biopsy. If the patient has bleeding in bright red color, and the bleeding comes after the stool, accompanied by blood dripping after the stool, jet-like bleeding and prolapse of meatballs in the anus, and there is swelling and pain in the anus, the blood in the stool may be caused by hemorrhoids, which can be diagnosed by anus visual examination, anus finger diagnosis, and anoscopy. It is important to note that if the patient has blood in the stool, it is necessary to go to the regular hospital anorectal department for examination as soon as possible, through the history, symptoms and related examinations, such as colonoscopy, anus examination, etc. to clarify what the lesion is, so as to further give targeted treatment.