It is not normal to pass yellow mucus in your bowel movements. It may be caused by chronic enteritis, intestinal polyps, intestinal cancer, gastrointestinal tract dysfunction and so on. 1. Chronic enteritis: inflammation will stimulate the intestinal mucosa, the mucosa will appear edema or erosion, under the stimulation of inflammation, there will be yellow mucus oozing out, clinging to the surface of the feces and then discharged. 2. Intestinal polyps: if there are abundant blood vessels on the surface of intestinal polyps, stool friction will cause ulcers and yellow mucus exudation, and in severe cases, mucus and blood stools will also occur. 3. Bowel cancer: when the body suffers from cancer, the immunity of the body will be reduced, which in turn affects the intestinal function, and there may be yellow mucus in the bowel movement. 4. Gastrointestinal tract dysfunction: When gastrointestinal tract dysfunction occurs, the intestinal tract’s ability to absorb water from food residue decreases, and it may even secrete a lot of mucus, which may lead to yellow mucus discharge. When the above symptoms occur, it is recommended to actively seek medical attention.