Chronic gastritis is a chronic gastric mucosal lesion. After improving dietary habits and active treatment, symptoms can generally be improved and disease progression delayed, but the likelihood of cure is low, and the specific improvement time needs to be determined by the nature of the lesion, the individual’s constitution, and the treatment method. There are many causes of chronic gastritis, most of which are caused by H. pylori infection. Anti-H. pylori treatment in the early stages of chronic gastritis can reduce the inflammation of the gastric mucosa, effectively stopping the development of the disease and significantly improving the symptoms. Secondly, liver and biliary tract diseases are also a cause of chronic gastritis. After active treatment of biliary tract diseases, the stimulation of gastric mucosa is reduced, which will also significantly reduce the inflammation of gastric mucosa and improve the symptoms and slow down the development of the disease. In the middle and late stages of chronic gastritis, such as chronic atrophic gastritis and chronic erosive gastritis, the glands on the gastric mucosa become atrophied, and even intestinal epithelial metaplasia and heterogeneous hyperplasia, and the symptoms of chronic gastritis will recur at this time, such as abdominal distention, belching, loss of appetite and malnutrition, etc. After giving an improved diet and active treatment, the symptoms can be significantly improved, and there are individual differences in the specific improvement time. Patients with chronic gastritis are advised to maintain a good mood, eat and live well, undergo regular gastroscopy, and actively cooperate with their doctors.