Three days without defecation is related to poor diet, indigestion, insufficient gastric power, constipation and other reasons, you can adjust the diet, exercise, hot massage, oral mosapride, lactulose and other drugs to defecate. 1. Dietary disorders: Avoid cold, spicy, greasy and stimulating foods in your diet to avoid increasing the burden on the gastrointestinal tract. All some dietary fiber food, promote gastrointestinal tract movement, help defecation. 2. Indigestion: indigestion should be appropriate exercise exercise, enhance the movement of the gastrointestinal tract, promote defecation, or with hot towels live warm water bag on the abdomen for hot compresses, in the appropriate abdominal massage can help rapid defecation. 3. Insufficient gastric power: due to insufficient gastric power caused by the lack of defecation, can be appropriate oral gastric power drugs, such as Mosapride, etc. to improve defecation. 4. Constipation: Constipation patients should exercise properly, eat more fiber-rich foods such as celery, etc., and follow the doctor’s instructions to use Keserol, lactulose, polyethylene glycol and other drugs to promote defecation. If the symptom of three days without defecation is not relieved, or accompanied by other symptoms, you should go to the hospital in time, and give targeted treatment after clarifying the cause.