Eat liquid foods (millet porridge, rice porridge) ① Avoid foods that are too hard, too spicy, too salty, too hot, too rough and irritating. The diet should be regular, eat less and eat more, chew slowly, and let the food and saliva be fully mixed to avoid overeating. Choose nutritious and digestible soft foods, and eat more foods containing plant protein and vitamins.

② Aspirin, acetaminophen, phenylbutazone, indoles, tetracycline, erythromycin and prednisone should be avoided, especially in the active period of chronic gastritis.

(3) Lack of gastric acid, avoid diluting gastric juice. It is advisable to add vinegar, lemon juice and acidic condiments to the diet, eat less indigestible and flatulent food, and drink as little as possible after meals.

People with hyperacidity should avoid eating foods that can stimulate gastric acid secretion, such as strong spices, alcohol, sour agents, etc.

⑤ Avoid alcohol and tobacco. After smoking, nicotine can stimulate gastric mucosa to increase gastric acid secretion, which has a harmful stimulating effect on gastric mucosa. Excessive smoking leads to the dysfunction of pyloric sphincter, bile and sweat reflux, damages gastric mucosa, affects the blood supply of gastric mucosa and the repair and regeneration of gastric mucosa cells, and should quit smoking. Alcohol can directly destroy the barrier of gastric mucosa, make H+ in gastric cavity invade gastric mucosa, and cause mucosal congestion, edema and erosion.