The causes of chronic non-atrophic gastritis include Helicobacter pylori infection, duodenal-gastric reflux, drugs or poisons, etc. Most patients have no obvious symptoms, which may be manifested as discomfort in the upper and middle abdomen, fullness, loss of appetite, belching and other symptoms. Chronic non-atrophic gastritis, also called chronic superficial gastritis, is a chronic inflammatory lesion of the gastric mucosa caused by different causes. The most important cause is Helicobacter pylori infection, while other causes include duodenal-gastric reflux, long-term use of non-steroidal anti-inflammatory drugs, alcohol, immune factors, age factors, and so on. Most patients with chronic non-atrophic gastritis have no obvious symptoms, and even if they do have symptoms, they are mostly non-specific. It can manifest as discomfort, fullness, dull pain in the upper and middle abdomen, or symptoms of dyspepsia such as loss of appetite, belching and nausea. It is recommended that patients with diagnosed chronic non-atrophic gastritis go to the hospital in time to avoid adverse consequences.