Poor digestion and absorption may be caused by gastrointestinal dysfunction, chronic gastritis, gastroduodenal ulcer, ulcerative colitis, etc., which need to be treated with domperidone, compound digestive enzymes, cimetidine and other drugs. 1. Gastrointestinal dysfunction: long-term bad eating habits, overeating, eating spicy and greasy stimulating food or gastrointestinal tract cold cold and other factors, can lead to gastrointestinal smooth muscle peristalsis and digestion and absorption is not good. You can take gastrointestinal tablets, domperidone, mosapride, compound digestive enzymes and other drugs. 2. Chronic gastritis: Helicobacter pylori infection can lead to chronic inflammatory lesions of the gastric mucosa, causing digestion and absorption dysfunction. You can take amoxicillin, clarithromycin, omeprazole, bismuth pectin and other drugs. 3. Gastroduodenal ulcer: after the gastrointestinal mucosa undergoes ulcerative changes, the secretion of gastric acid increases, leading to digestive disorders and the above situation. It can be treated with oral medicines such as omeprazole, cimetidine, aluminum hydroxide and mosapride. 4. Ulcerative colitis: chronic non-specific inflammatory lesions of the intestinal mucosa due to autoimmune dysfunction, mucosal bleeding, ulcers can lead to poor digestion and absorption. You can take oral mesalazine, salazosulfapyridine, prednisone and other drugs. The above drugs should be used under the guidance of professional physicians. Poor digestion and absorption is recommended to consult a doctor in a timely manner, under the guidance of a professional physician to clarify the diagnosis and treatment.