Intermittent blood in the stool, considering the possibility of hemorrhoids, but also can not be excluded anal fissure, intestinal inflammation or intestinal benign and malignant lesions, need to improve the examination in order to treat the symptoms. 1. hemorrhoids and anal fissure: common intermittent bleeding in the stool and hemorrhoids and anal fissure considerations and acute episodes of anal fissure, but the patient’s bowel dry defecation for a long time, or perianal local congestion, will cause hemorrhoids and anal fissure rupture bleeding, mainly to bright red blood mainly. 2. Colorectal inflammation: acute and chronic colorectal inflammation will appear intestinal mucosa congestion edema and erosion. Especially when the intestinal mucosa is eroded, the patient will have a small amount of stool bleeding during defecation, accompanied by pus and mucus, abdominal pain and diarrhea. 3. Intestinal benign and malignant lesions: intestinal polyps and intestinal malignant tumors lead to bleeding in the stool, intestinal polyps may be accompanied by different degrees of abdominal pain. Intestinal polyps may be accompanied by abdominal pain of varying degrees. Intestinal malignant tumors, in addition to dark red blood in the stool, will also be accompanied by poor bowel movement, generalized emaciation and other symptoms. There are many possible reasons for the blood dripping from the stool every few days, it is recommended to consult a doctor in time for examination and treatment under the guidance of the doctor.