Jelly-like blood in the stool is considered to be caused by bacillary dysentery, ulcerative colitis, intestinal polyps, colorectal cancer and other disease factors. 1. Bacterial dysentery: an infectious disease of the intestinal tract caused by Shigella bacteria, which will destroy the normal absorption capacity of the intestinal tract after bacterial infection, leading to the symptoms of jelly-like blood in the stool. 2. Ulcerative colitis: a chronic non-specific inflammatory disease of the rectum and colon of undetermined etiology, which can have mucus blood stools and other symptoms similar to jelly-like blood in the stool. 3. Intestinal polyps: patients with intestinal polyps may have intermittent bleeding, and when there are more polyps or further lesions, bleeding can be similar to jelly-like blood in the stool. 4. Colorectal cancer: there may be changes in the stool pattern and blood in the stool, leading to the symptom of blood in the stool like jelly. It is recommended to go to the hospital to consult a doctor to determine the cause of the blood in the stool.