Hemorrhoids or colorectal cancer can both cause local bleeding in the anal area, but there are clear differences between hemorrhoidal bleeding and colorectal cancer bleeding in clinical practice. Hemorrhoidal bleeding is mostly bright red and does not mix with the stool; it is separate bleeding. It may manifest as blood on the finger, or as dripping or spurting blood. Colorectal cancer bleeding, on the other hand, is generally dark red and mixes with the stool, sometimes accompanied by pus and blood. Bleeding from colorectal cancer mainly occurs in the late stages of the disease, usually caused by local mucosal ulceration or tumor rupture. During hemorrhoidal bleeding, an anal scope examination can reveal clear bleeding points above and below the dentate line, while bleeding from colorectal cancer requires examination with an electronic colonoscope to observe the local tumor area, which may show mucosal damage or ulcers.