This symptom is called “mucus blood stool” in medicine, which can be seen in ulcerative colitis, bacterial dysentery, colorectal cancer and other diseases. 1. Ulcerative colitis: it is a chronic non-specific inflammatory disease of the intestinal tract, which can be manifested as diarrhea, mucus-pus-blood stool, abdominal pain and other symptoms. 2. Bacterial dysentery: it is an intestinal infectious disease caused by Shigella infection, which may have symptoms such as mucous bloody stool, abdominal pain and diarrhea. 3. Colorectal cancer: colorectal cancer can have mucous blood stools, accompanied by abdominal pain, abdominal mass, emaciation and other symptoms. It is recommended to go to the hospital and ask the doctor to judge the situation that there is egg-white-like mucus with blood in the stool, and it is not advisable to judge the situation blindly by oneself.