There are many causes of chronic superficial gastritis, including Helicobacter pylori, duodenogastric reflux and food and drug stimulation. 1. Helicobacter pylori infection: the metabolites of Helicobacter pylori can stimulate the gastric mucosa, causing a series of atypical hyperplasia in the mucosal layer and the mucosal muscular layer, which leads to inflammatory reactions. 2. Duodenal gastric reflux: bile, pancreatic enzymes and alkaline intestinal contents in the duodenum reflux into the stomach can destroy the gastric mucosal barrier and lead to gastritis. 3. Food and drug stimulation: Spicy, rough food, salicylic acid preparations and corticosteroids and other factors that stimulate the gastric mucosa for a long time will lead to gastric mucosal damage, and then induce chronic superficial gastritis. Chronic superficial gastritis may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination, under the guidance of the doctor to clarify the cause of the disease, give targeted treatment or treatment.