Although the causes of digestive system diseases are related to various factors such as diet, mental, sleep and climate, the most basic, direct and crucial factor is “diet”. Therefore, whether we can really strictly control the “entrance” is directly related to the development and prognosis of digestive system diseases. So, how to put this “entrance” off? 1, is to avoid eating raw, cooked food. Such as raw onions, garlic, radish, etc. not only easy to hurt the stomach gas, and can be infected with intestinal roundworm disease; raw aquatic products susceptible to schistosomiasis; eat uncooked bean curd and boiled soy milk can be straight food poisoning. 2, is to eat less pickled, burned, baked, smoked, fried food, eat more fried, boiled, steamed food. Because the former contains carcinogens, is now recognized as the “quasi-factor” can cause stomach cancer. 3. Avoid eating polluted, rotten and spoiled products, and eat clean, fresh, colorful and nutritious food. 4. Do not eat as you like, gobble, gorge, overeat, but eat regularly, chew and swallow slowly, eat before you are hungry and stop before you are full. Because the former can hurt the stomach gas, and the risk of acute gastric dilatation, peptic ulcer acute perforation, acute pancreatitis. 5, is to avoid smoking and alcohol. Because smoking can cause peptic ulcers. Wine 80% in the stomach absorption, so it is the first damage to the human body is the “stomach”, can cause acute gastric mucosal lesions, peptic ulcer acute perforation or bleeding. In addition, wine can also hurt the liver, pancreas, brain, causing alcoholic liver disease, alcoholic pancreatitis, acute and chronic alcoholism, and even life-threatening. 6, is careful to take drugs that hurt the stomach. Such as anti-inflammatory pain, Protetason, aspirin, etc., can trigger or aggravate gastritis, peptic ulcer. In addition, eating cold, greasy, sweet and sour, spicy food can trigger or aggravate acute and chronic gastritis, peptic ulcer, biliary tract disorders, inflammatory bowel disease, etc., should also be listed as contraindicated.