If the patient has lifelong atrophic gastritis, they may need to follow a doctor's advice and take medications that increase mucosal nutrition for life, such as sucralfate, live gastric ketone, prostaglandin E1, etc. The main causes of atrophic gastritis are Helicobacter pylori infection, as well as other factors such as autoimmune mechanisms, genetic factors, and decreased gastric mucosal barrier function. The main symptoms of atrophic gastritis include obscure pain in the upper abdomen, distension, burning pain, along with accompanying symptoms like weight loss and anemia. Treatment for atrophic gastritis involves eradicating Helicobacter pylori and using medications that protect the gastric mucosa.