Chronic gastritis refers to various chronic mucosal inflammatory lesions of the stomach caused by different etiologies. It is a common disease, with superficial gastritis and atrophic gastritis being more common clinically. Recent studies have concluded that chronic superficial gastritis is closely related to Helicobacter pylori infection. The rate of positive detection of H. pylori in chronic gastritis is high. This is often associated with bile reflux, adverse stimulation by food and drugs. Chronic atrophic gastritis can occur in combination with superficial gastritis and is also associated with immune, endocrine and pernicious anemia factors. 1, clinical manifestations: chronic gastritis more chronic course, some patients can not have any clinical manifestations, but most can have varying degrees of gastrointestinal symptoms. Such as: fullness, warmth, especially when there is bile sweat reflux more obvious. A few have loss of appetite and nausea. It often manifests as persistent upper and middle abdominal pain, which can occur immediately after eating. Chronic gastritis more than no obvious body piece, sometimes can be found in the epigastric light pressure pain, tongue inflammation, tongue papilla atrophy, anemia, wasting and other manifestations. 2, the main examination: ① gastroscopy combined with direct vision biopsy is the main method to diagnose chronic gastritis. The positive rate of H. pylori infection in chronic gastritis is as high as 70-90%, which can be examined by taking gastric mucosal tissues through gastroscopy and also by checking the antibodies of H. pylori in the patient’s blood. In addition, it can also be examined before and after anti-H. pylori treatment for chronic gastritis as one of the tracing indicators. (③Barium x-ray meal imaging in most chronic superficial gastritis without abnormal manifestations. Atrophic gastritis can show atrophy of the gastric mucosa and relative flattening and reduction of the gastric wrinkle wall by dual gas-barium imaging. Gastric acid secretion is low in chronic atrophic gastritis. ④Stimulation with pentagastrin and measurement of basal gastric acid secretion per hour (BAO), maximum acid secretion (MAO), and peak acid secretion (PAO) can help diagnose atrophic gastritis. ⑤ Serum mural cell antibody test and serum gastrin measurement can be used as reference indicators for the diagnosis of atrophic gastritis and typing. 3. Diagnosis: The history of chronic gastritis is often atypical, the symptoms are not specific, and the signs are few. X-rays are generally only useful to exclude other gastric disorders. The diagnosis is mainly based on gastroscopy and gastric mucosal biopsy. It is supplemented by gastric secretion examination. The disease needs to be differentiated from peptic ulcer, gastrointestinal neurosis, chronic biliary tract disease, etc. 4.Treatment: First of all, eliminate the cause of the disease, remove all possible causative factors, avoid or prohibit food and drugs that stimulate the stomach. If the liver juice reflux is obvious, you can take drugs such as biliary amine, aluminum thioglycollate, morpholine, gastric reversion, which can improve the symptoms. For patients with high positive rate of H. pylori in the blood, available Delo (compound bismuth), ampicillin, tetracycline, methotrexate, dysentery, etc.. 5, care: should strengthen the propaganda, so that the patient’s life is regular, acute attacks or symptoms should be bed rest, avoid mental tension and excessive fatigue, maintain optimism; strengthen dietary management, into the rich and easy to digest nutritious food, do not overeat, avoid into the rough and irritating food, according to changes in the condition, can enter the liquid or semi-liquid diet.