The cold winter has come to us. The cold will make the body’s immune system function lower, and the gastrointestinal tract will easily become dysfunctional when stimulated by the cold, so that peptic ulcers and inflammation of the gastrointestinal tract will be more frequent. Patients will have symptoms such as abdominal pain, acid reflux, upper abdominal discomfort, nausea and vomiting. Gastrointestinal diseases are often associated with poor dietary habits, such as eating rough, overly hard food for a long time, or eating too fast, which damages the mucous membrane of the esophagus and gastrointestinal tract. In addition, irregular diet, “hungry a meal, full a meal”, or overeating, especially in winter, eating too much hot pot, high-fat, high-calorie food intake, can also cause damage to the gastric mucosa, resulting in gastrointestinal tract dysfunction, leading to acute gastric dilatation, chronic gastritis, functional dyspepsia and other gastrointestinal diseases. Prevention tips: pay attention to warmth, regular diet, do not overeat, should not eat cold and bitter cold food, can be appropriate to drink low alcohol, but only drink less. Eating should not be too full, too full will make the stomach peristalsis ribbon slow, food is not fully digested and in the large intestine decay produces toxins, resulting in digestive dysfunction. Drinking should not be excessive, a small amount of alcohol has the effect of blood, thick intestines and stomach, moisten the skin, go cold, but too much wine, will hurt the liver, spleen and stomach. Winter nutrition should be based on increasing caloric energy, should consume enough protein, fat, carbohydrates, vitamins and minerals. Eat hot pot in moderation, but also in moderation to eat some steamed buns, noodles and other noodles, after eating to drink more boiled water or strong tea, can play a protective effect on the intestines and stomach.