Abdominal pain is a relatively common symptom in clinical practice. Abdominal pain is most often caused by some kind of strong irritation or injury to intra-abdominal tissues or organs. The abdominal pain and blood in the stool is relatively more complicated, and it should be combined with whether the blood in the stool is fresh or black blood. Abdominal pain and blood in stool are mostly caused by intestinal lesions, such as enteritis, intestinal tuberculosis, acute hemorrhagic necrotizing enterocolitis, and intussusception. Bleeding in stool may originate from immediate bleeding in the anal rectum itself during defecation, such as hemorrhoids, anal fissures and intestinal polyps, and some occupational lesions in the intestine may also cause abdominal pain and blood in stool, such as rectal cancer. You can go to the hospital for routine stool examination or colonoscopy. If the blood in stool is caused by intestinal lesions, you should first go to the hospital, then pay more attention to rest, avoid spicy stimulation, drink more hot water, and keep the affected area dry and clean. It may also be due to old bleeding from other parts discharged through the anus, such as upper gastrointestinal bleeding, and the stool may be dark red when the bleeding is large. If there are obvious clinical symptoms, such as vomiting blood and severe abdominal pain, gastroscopy can be taken to stop the bleeding. Therefore, abdominal pain is a defense signal of the body, and stool bleeding is a very important method of disease prevention and detection. Therefore, when abdominal pain with blood in the stool occurs, you should go to the hospital promptly and, according to your condition, carry out reasonable and effective treatment under the guidance of a clinician.