There are more reasons for abdominal pain before defecation, mainly divided into two kinds of physiological and pathological factors, and patients can make corresponding relief and treatment according to the specific causes. In the process of intestinal peristalsis, the intestinal wall is constantly contracted and stretched, sometimes there is a slight spasm, so the phenomenon of abdominal pain, the pain can be relieved by itself after defecation, this is a normal physiological phenomenon, patients do not have to worry too much. You can drink more water and eat more fiber-rich vegetables and fruits, such as spinach, celery, apples, bananas, etc., to ensure bowel movement and bowel passage. Second, pathological 1, gastroenteritis: the patient’s intake of excessive cold, spicy and irritating food, as well as overeating, food poisoning, unclean diet or abdominal cold stimulation, etc., can cause inflammation of the gastrointestinal tract, will lead to abdominal pain during defecation, patients can adjust the diet structure, such as light diet, regular rationing of each meal, pay attention to dietary hygiene to relieve. When the symptoms are severe, patients need to go to the hospital in time and choose the appropriate medication for treatment under the guidance of the doctor according to their personal conditions. If the abdominal pain is severe, atropine and scopolamine can be used to reduce intestinal spasm and relieve abdominal pain; if vomiting is severe, metoclopramide can be used intravenously; patients with diarrhea can use antidiarrheal drugs such as montelukast; mosapride, etopride and domperidone are suitable for patients with epigastric fullness; 2. Abdominal pain before stool may appear. Patients need to go to the hospital in time, improve the colonoscopy and actively treat the original disease. If it is benign colorectal tumor, it can be removed by surgery and the symptoms of pre-poo abdominal pain can be relieved after the disease is healed. If it is malignant colorectal tumor, it can be treated by surgical methods such as colorectal resection, laparoscopic colorectal tumor resection, supplemented by a comprehensive program of chemotherapy, immunotherapy, traditional Chinese medicine and other supportive treatments to improve survival rate and reduce recurrence rate.