The causes of abdominal pain after defecation are commonly found in gastrointestinal dynamics disorder, intestinal inflammation, diet or cold influence, acute gastroenteritis, colorectal tumors and so on. 1. Intestinal dynamics disorder: diarrhea, constipation or alternating diarrhea and constipation due to gastrointestinal dynamics disorder, unrelieved abdominal pain after defecation, and so on. 2. Intestinal inflammation: chronic inflammation of the intestinal tract can be manifested as hidden pain in the abdomen, which can be triggered after defecation, such as chronic colitis, which can cause diarrhea, abdominal pain, abdominal distension and other symptoms. 3. Diet or cold abdomen: eating spicy, cold and greasy food, may also appear after defecation, abdominal pain and pain in the anal area and other symptoms, daily life should be avoided spicy stimulating food intake, eat more warm, soft, light food. The symptoms of diarrhea and abdominal pain can also occur when the abdomen is cold. 4. Acute gastroenteritis: intestinal cramping pain after defecation can be relieved by acupuncture, massage and localized hot compresses on the abdomen. 5. Colorectal tumor: in addition to abdominal pain, there will be emaciation, pus and blood stools, fatigue, abdominal mass and other manifestations. There are many reasons for abdominal pain after defecation. When abdominal pain after defecation occurs, you should go to the local hospital immediately, and give comprehensive examination and treatment under the guidance of the doctor, so as to avoid delaying the condition.