Lower abdominal pain, no pain after diarrhea, repeated several times may be due to enteritis, constipation, gastrointestinal dysfunction and so on. 1. Enteritis: most of the enteritis is caused by genetic, immune, infection and other factors, in the clinical nausea, vomiting, diarrhea, epigastric discomfort, loss of appetite and other symptoms. Patients with enteritis will cause bleeding and edema of the mucous membrane in the intestine, and the inflammatory factors in the intestine will cause certain stimulation to the mucous membrane of the intestine and trigger pain, but the symptoms will be relieved after defecation. 2. Constipation: constipation is mostly due to the slow movement of feces in the digestive tract, resulting in excessive absorption of water in the intestines, causing certain stimulation of the intestinal smooth muscle, which can cause abdominal pain, but the symptoms will be relieved after defecation. 3. Gastrointestinal dysfunction: Gastrointestinal dysfunction is mostly caused by mental and psychological disorders, family heredity, food and other factors, which will cause abdominal pain, diarrhea, nausea, vomiting, loss of appetite and other symptoms, and will stimulate the gastrointestinal tract after consuming irrational food, which will lead to the aggravation of symptoms, and the symptoms will be relieved after defecation. It is recommended that patients go to the hospital for examination, to clarify the cause of the disease, and timely symptomatic treatment.