Constipation for three days without defecation can use laxatives to temporarily relieve the symptoms, daily treatment needs to be based on the type of choice of different treatment methods. Constipation is categorized into organic constipation and functional constipation, and the treatment is divided into general treatment, causative treatment and medication. 1. Organic constipation: mainly for the primary causes of constipation for treatment, such as inflammatory bowel disease, intestinal tumors, perianal diseases. Three days without defecation can temporarily use laxatives to relieve symptoms, such as magnesium sulfate, mannitol, liquid paraffin, etc., but should not be used for a long time. 2. Functional constipation: daily to develop good eating habits and regular defecation habits, eat more bran, vegetables, fruits and other foods rich in dietary fiber, appropriate psychological intervention. Three days without defecation can choose laxatives to relieve, such as magnesium sulfate, mannitol, mosapride, etc.; with fecal impaction can be used glycerin suppository or clean enema. Constipation is the result of multiple factors, aimed at finding the cause of the disease, such as constipation for three days without defecation is recommended to consult a doctor in a timely manner, according to the doctor’s advice on symptomatic treatment. The above medications should be used under medical supervision.