Stool pulling all mucus is not necessarily a disease, may be a normal physiological phenomenon, but may also be due to ulcerative colitis, chronic colitis, irritable bowel syndrome and other diseases. 1. Normal physiological phenomenon: the secretion of intestinal mucosal fluid and epithelial cell shedding may make the stool with some mucus, but generally not accompanied by abdominal pain, diarrhea, constipation and other discomforts, this situation is mostly a normal physiological phenomenon. 2. Diseases: (1) ulcerative colitis: the disease belongs to a kind of inflammatory bowel disease, usually the patient will be manifested as repeated episodes of diarrhea, mucous pus and blood stool, abdominal pain and other symptoms. (2) Chronic colitis: for those who suffer from chronic colitis, due to prolonged inflammation stimulation, diarrhea, abdominal pain, mucous blood stools and pus and blood stools will also occur, but at the same time, it will be accompanied by a sense of urgency and heaviness (discomfort in the lower abdomen, a strong desire to relieve stools, and a sense of incomplete defecation after defecation), and it will recur. (3) Irritable bowel syndrome: the disease is a functional bowel disease, usually manifested as abdominal pain, diarrhea, constipation, and diarrhea, stools are often manifested as pasty or dilute watery, and can contain a lot of mucus phenomenon. To sum up, the situation that the stool is full of mucus, it is recommended to go to the hospital in a timely manner, check the colonoscopy, fecal routine and other items, by the doctor to make a comprehensive judgment.