Abdominal pain with blood in stool is usually caused by a number of reasons: firstly, it is considered that there may be strangulated intestinal obstruction, or acute gastroenteritis complicated by aggravation of hemorrhoids, etc.. It is generally common in the latter, manifesting as fresh blood attached to the surface of the stool or dripping blood after the stool. Secondly, infectious diseases of the intestinal tract, such as bacterial dysentery, are often manifested by pus and blood-like stools, with a small amount each time, often accompanied by a feeling of urgency and heaviness. Once again, ulcerative colitis and rectal cancer have recurrent episodes of mucopurulent and bloody stools, and colon cancer has mucopurulent and bloody stools along with thinning of stools. In addition, gastroduodenal ulcer, perforation, liver cirrhosis, and bleeding from ruptured varices of the fundus can present with abdominal pain accompanied by blood in the stool. Finally, some other diseases, such as blood disorders, oral anticoagulant drugs or platelet inhibitors, can also cause it, and it is recommended to identify the cause and treat it symptomatically.