Severe constipation in the elderly may be associated with functional constipation, rectal polyps, and rectal tumors. It is usually handled by dietary adjustment, medication and surgery. 1. Functional constipation: it is often due to the weakening of intestinal peristalsis with the increase of age, which easily causes constipation. Usually eat more fresh vegetables, fruits, etc., every day moderate exercise on constipation has certain help. At the same time, when constipation is more serious, you can consider giving lactulose and other drugs to help defecation. 2. Rectal polyps: If the number of intestinal polyps is large, the space in the intestinal lumen becomes narrow, defecation is obstructed, and constipation is easy to occur. If the number of intestinal polyps is large and the diameter is big, the polyps should be removed in time to relieve constipation. 3. Rectal tumor: the tumor grows to a certain size, or infiltrate the intestinal wall caused by intestinal narrowing, intestinal lumen becomes smaller, the obstruction of food passage will cause constipation, the patient can use lactulose to help defecation, but should be timely rectal tumor resection surgery, to treat the disease. The above medicines are for reference only, the specific dosage and usage should follow the doctor’s instructions. When constipation is serious in the elderly, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, and under the doctor’s comprehensive analysis, choose a reasonable treatment plan.