Bowel cancer is considered to be rectal cancer or colon cancer, and blood in stool in early stage is mostly characterized by blood on the surface of stool or pus and blood in stool. Blood in stool is just a symptom, which may be caused by malignant tumor such as bowel cancer or other diseases, and it is not possible to determine whether it is bowel cancer or other diseases simply from a symptom. In the early stage of rectal cancer, there may be no symptom of blood in stool or no uncomfortable feeling, but some people may have frequent bowel movement and anal falling, and if the cancer breaks down, then the phenomenon of blood in stool will occur. Colon cancer may show symptoms such as increased frequency of bowel movement, or constipation, blood in feces, and discharge of pus or mucus. If you have abnormal bowel movement with blood in stool, you should go to the hospital for examination in time to clarify the cause of the disease, early detection and early treatment.