Fecal pus and blood is now a relatively common clinical condition, and many people tend to suspect bacterial dysentery, with pus-like material or red blood covering the stool. There is inflammation or external stimulation of the intestines, such as bacterial enteritis, inflammatory enteritis can cause damage to the mucous membranes of the intestines before pus and blood stools appear. Fecal pus and blood pus and blood is a typical symptom of ulcerative colitis, rectal cancer and colon cancer, and the clinical diagnosis is as follows: Ulcerative colitis: mostly bloody diarrhea or pus and blood stools, and in severe cases, blood and watery stools, more than 10 times a day. There is paroxysmal spasmodic colic in the left lower abdomen or lower abdomen, accompanied by dyspareunia or urgency. Occasionally there are nausea, vomiting, epigastric discomfort, fever and other symptoms. Rectal cancer: it is one of the common symptoms of rectal cancer. In the early stage, 50% of the cases have blood in stool, and the bleeding is small at the beginning, which is seen on the surface of feces, and after combined with infection, it is thick blood in stool. Colon cancer: at the earliest stage, there may be abdominal distension, discomfort, indigestion-like symptoms, and then changes in bowel habit, such as increased frequency of constipation, diarrhea or constipation, and abdominal pain before bowel movement. Later, there can be mucus stool or mucopurulent blood stool. Some systemic diseases such as leukemia, aplastic anemia, hemophilia, etc. can also have symptoms of pus and blood stool. Examination: Anoscopy: using medical video camera technology, in the examination process can be clearly observed at the same time magnified hundreds of times the site of the lesion, but also can be deep inside the anus and intestines of the lesion site image acquisition, real-time diagnosis, to avoid the traditional man-made examination brought about by the inadequacy of the condition caused by the delay. At the same time, the lesions can be locked after printing and imaging, providing a reliable basis for comparison before and after treatment.