Poor intestinal absorption and thinness may be caused by poor lifestyle, poor diet, gastrointestinal diseases, etc., which can be adjusted by correcting bad habits, adjusting diet, symptomatic treatment of diseases and other methods. 1. Bad lifestyle: such as a long time to stay up late, the pressure will lead to gastrointestinal absorption of poor thinning. At this time, you can correct bad habits, such as appropriate exercise, rest half an hour after meals, and then take a walk. Can also increase sleep, rest time, keep a happy mood, pay attention to the cold, thus promoting gastrointestinal peristalsis, promote gastrointestinal absorption. 2. Bad dietary habits: some people are picky eaters, anorexic, or like to eat spicy, too greasy food, these habits may make the stomach and intestines absorb poorly. By adjusting dietary habits, eating foods rich in nutrients and easy to digest, and balanced intake of nutrients, after insisting for a period of time may improve gastrointestinal absorption function, so that weight gain. 3. Gastrointestinal diseases: If the patient has gastrointestinal diseases such as chronic gastritis, gastric ulcer, etc., he/she may also be thin with poor intestinal absorption. Drugs to improve digestive function, such as gastrointestinal tablets, pancreatic enzyme enteric-coated tablets, etc., can be applied, and probiotics, such as Bifidobacterium bifidum tetragonum tablets, etc., can also be taken for treatment. Note that the above drugs should be used under the guidance of the doctor, avoid unauthorized use of drugs, so as not to cause adverse effects. If the patient’s symptoms fail to improve through the above methods, it is recommended to consult a doctor in time, improve the relevant examination, clarify the cause of the disease and symptomatic treatment.