Poor gastrointestinal absorption may be caused by dyspepsia, chronic gastritis, peptic ulcer, etc., according to the corresponding cause of the drugs, dietary modification, exercise and other ways to improve the symptoms. 1. Indigestion: slow gastric peristalsis affects digestion and absorption, and can be prescribed to give domperidone, pepsin and other medications to treat, usually more abdominal rubbing, more exercise, increase gastrointestinal peristalsis, improve digestion and absorption ability. 2. Chronic gastritis: gastric mucosa inflammation, erosion affects the absorption of food, can be prescribed to give antacids, such as omeprazole, aluminum thioglycollate and other drugs. 3. Peptic ulcer: if there is infection with Helicobacter pylori, can be given amoxicillin, metronidazole, rabeprazole, colloidal bismuth pectin and other medications as prescribed by the doctor to improve digestion and absorption. Gastrointestinal absorption is not good, there may be a variety of other reasons, should be under the guidance of the doctor to clarify the cause of the disease, give targeted treatment. And pay attention to prohibit spicy, strong tea, tobacco and alcohol and other stimulating food, to light, easy to digest food.