Usually, bleeding stools from the ascending colon are dark red or black in color. Intestinal bleeding is divided into upper and lower gastrointestinal tracts, and the ascending colon belongs to the lower gastrointestinal tract. The color of blood in the stool in lower GI lesions can vary depending on the location of the GI bleeding, the amount of bleeding and the length of time the blood stays in the intestines. The ascending colon is far away from the anus, and the stool is mostly dark red or even black. If the amount of bleeding is very small, or even invisible to the naked eye, it is only manifested by a positive fecal occult blood test. Bleeding from the colon can be seen in a variety of diseases. Tumors of the colon may develop localized erosions, which may cause bleeding symptoms, and the blood is usually mixed with feces. Inflammatory diseases of the colon, such as Crohn’s disease, can also cause bleeding in the colon due to the presence of ulcers in the intestinal mucosa, which ooze mucus and blood. Usually, patients present with mucus, pus and blood in the stool, accompanied by abdominal pain and other related symptoms. Therefore, bleeding from the colon, need to find the cause of bleeding. Ascending colon bleeding patients, should attract enough attention, need to go to the hospital immediately, do colonoscopy examination, clear cause for targeted treatment.