Malabsorption syndrome is a syndrome caused by various causes of malabsorption of nutrients from the small intestine, which must undergo adequate digestion. The clinical manifestations of malabsorption syndrome are a series of pathophysiological changes caused by a variety of nutrient absorption disorders, in addition to the characteristic symptoms and signs of the primary disease causing malabsorption. Most patients with malabsorption syndrome have diarrhea. The frequency of stools varies from a few to more than 10 times, and diarrhea and abdominal pain are the most important symptoms of the disease. The diarrhea is usually “steatorrhea”, which is characterized by large amount of stool, light brown or yellow, gray, unshaped, foul-smelling, with a greasy sheen or foamy surface, and because the stool contains a lot of fat, the stool can often float on the surface of the potty. Due to insufficient absorption, resulting in malnutrition, common weight loss, tiredness and weakness. Prevention of malabsorption syndrome is mainly to control its high-risk factors, including the following: 1, avoid the abuse of antibiotics, mainly refers to unnecessary, long-term use of a wide range of antibiotics; 2, the emergence of gastrointestinal symptoms do not delay, should promptly seek the help of gastroenterologists; 3, abstain from alcohol or reduce alcohol intake; 4, pay attention to travel safety, to reduce the risk of parasitic infection; 5, improve Dietary habits are very important, and a strict diet plan should be implemented according to the doctor’s recommendations.