Helicobacter pylori infection should pay attention to dietary hygiene, the implementation of separate meal system, to avoid cross-infection, avoid food depending on the degree of the disease such as combined gastritis, peptic ulcer, etc., usually avoid food such as hot and sour fried and other stimulating food, smoked food, unhygienic food, avoid drinking alcohol and so on. 1. Spicy, sour, fried and other stimulating foods: such as chili peppers, ice cream, cold drinks, French fries and other foods may stimulate increased secretion of gastric acid, which may aggravate the damage to the gastric mucosa. 2. Smoked food: such as sausage, preserved fish, bacon, etc., such food is not easy to digest, the nitrite content is high, there is a risk of cancer, so it is also not suitable for patients to eat. 3. Unhygienic food: unhygienic food may aggravate the symptoms, so patients should also not eat. Helicobacter pylori infection will increase the risk of gastritis, gastroduodenal ulcer and gastric cancer, so patients need to pay attention to the need for standardized treatment by a professional doctor, and if necessary, can be eradicated Helicobacter pylori treatment.