If you have abdominal pain but can’t defecate, if you have the intention to defecate, you can try with corked fluid first. If you defecate smoothly and the abdominal pain is relieved after defecation, consider that it may be caused by constipation, then we should pay attention to it in our daily life. However, if it does not come out, it is considered to be related to intestinal obstruction, colon cancer and other factors, which requires timely medical consultation and application of drugs and surgical treatment to relieve the symptoms. Common conditions are as follows: 1, constipation: insufficient diet, improper diet, too little exercise and other factors can lead to dry stool, not easy to discharge. It is necessary to improve living habits, such as light diet, less spicy and stimulating food, more water, more fruits and vegetables, regular work and rest, moderate exercise, and the habit of regular bowel movement or use drugs such as bifidobacterium, polyethylene glycol, and mosapride to regulate intestinal flora and promote gastrointestinal peristalsis to improve symptoms; 2. 2, intestinal obstruction: various causes of intestinal contents pass through the obstacle, resulting in abdominal pain, intent to defecate but can not . Non-surgical treatment includes gastrointestinal decompression, timely rehydration to correct water and electrolyte disorders and acid-base imbalance, and in serious cases, contacting obstruction through intestinal torsion repositioning and adhesion relaxation to relieve symptoms; 3, colon cancer: especially left hemicolectomy can be manifested as change in defecation habit, accompanied by abdominal distension, abdominal pain and other symptoms, early treatment is based on nutritional support, easy-to-digest liquid and semi-liquid food can be eaten, and reduce the amount of soy milk, milk and other easily flatulent food. Early treatment is based on nutritional support, including easy-to-digest liquid and semi-liquid food, reducing the intake of flatulence-prone food such as soy milk and cow’s milk, as well as open surgery or laparoscopic surgery to remove the lesion and chemotherapy to control the development of the disease in order to improve the quality of life.