The term “food” and “food avoidance” is a common name in Chinese medicine. Any food that has certain curative properties and can be used to prevent and control a certain disease, we call them the appropriate food for this disease, referred to as the appropriate food, should always eat; while the food that can make you unwell, induce disease, aggravate the disease, is your contraindicated food, should avoid eating. However, for some people, a food may be a suitable food, while for others, it is a contraindicated food. The occurrence of gastrointestinal diseases is closely related to improper diet, so gastrointestinal patients should pay more attention to the reasonable regulation of diet. As the saying goes, “Three parts treatment, seven parts nourishment.” This means that it is very important to pay attention to life and diet during the process of disease recovery. The scientific and reasonable arrangement of life, keep the mood relaxed, the correct choice and deployment of diet will accelerate the recovery of chronic gastrointestinal diseases. The following are the dietary contraindications of common digestive diseases. 1.Peptic ulcer. The diet should be regular and quantitative, eat less and more meals. Eat easily digestible and nutritious food, and ensure the intake of adequate amounts of vitamins and proteins, and prohibit all foods that are too acidic and too sweet that are irritating to the ulcer surface, such as chili peppers, raw onions, raw garlic, espresso coffee, wine, strong tea, etc. In addition, gastric ulcer patients should also quit smoking, because the nicotine in tobacco can change the pH of gastric juice, disrupting the normal activities of the gastric pylorus, triggering or aggravating ulcer disease. 2, chronic gastritis common epigastric pain, loss of appetite and postprandial fullness, not much to eat but feel too full. The symptoms are often triggered or aggravated by cold, hard, spicy or other irritating foods. The first step is to avoid harmful factors: i.e. quit smoking, strong alcohol, strong tea, coffee, etc. The first thing is to avoid harmful factors: quit smoking, do not drink strong alcohol, strong tea, coffee, etc. Eat less spicy and rough food, do not eat fried, deep-fried, half-cooked products and hard food, and take less drugs that are irritating to the stomach and intestines. The second is that the diet of chronic gastritis patients advocates three meals a day, each meal should not be too full, do not advocate multiple meals, so as not to increase the burden on the stomach. 3, gastrointestinal patients in the period of taking Chinese medicine diet should be light, can not give greasy, high protein, high fat food, such as crab, chicken and duck meat, fish, etc., these foods tend to increase the burden on the stomach and intestines, is not conducive to the role of drugs. 4, poor gastrointestinal function of patients should not eat more starch-based food, such as potatoes, soybeans, etc., these foods are prone to gas production and bloating. 5, colitis, chronic diarrhea patients diet diet to soft, easy to digest, rich in nutrients, have enough heat for the principle, and should eat less meals; especially should pay attention to dietary hygiene, should not eat cold food; avoid eating greasy food, because greasy food can inhibit the secretion of gastric acid, affect digestion, and worsen diarrhea, greasy food, including fatty meat, fried food, etc.; avoid eating milk, goat’s milk and a large amount of sucrose: such Food into the intestinal tract is easy to ferment, producing a lot of gas, causing abdominal distension and pain, making the condition worse. Avoid eating raw garlic, which may stimulate and provoke the intestinal wall, promoting further congestion and edema of the intestinal mucosa, causing more tissue fluid to seep into the intestine and aggravating diarrhea. Avoid eating high-fiber foods: such as leeks, celery, garlic moss, etc., to use less slag diet, in order to reduce the high fiber components may bring mechanical damage to the colonic mucosa. 6, constipation patients should eat more celery, but also often eat some agar, bananas, honey and other foods that can laxative. Gastrointestinal disease triggers, dietary factors are more common, such as irregular diet, unhygienic, overeating, partiality, etc.. Many patients have recurrent chronic gastrointestinal diseases that cannot be cured, affecting work, study and quality of life. The reasons for this are closely related to the lack of attention to scientific and rational dietary arrangements. Therefore, it is very important to change the bad eating habits and learn to choose the correct and reasonable diet for yourself to recover from the disease.