The symptoms of reflux esophagitis mainly include acid reflux, heartburn, chest pain, pain in the upper abdomen, a burning sensation in the upper abdomen, belching, etc. Some people may also experience symptoms of indigestion. There are no distinct early or late-stage symptoms; generally, the symptoms are always these manifestations, without a specific progression from early to late stages. The diagnosis primarily relies on gastroscopy. Under gastroscopy, we can observe erosions, hyperemia, or ulcers in the mucosa of the esophagus, which can then be diagnosed as reflux esophagitis. The treatment focuses on promoting gastric motility, acid suppression, stomach protection, and mucosal protection as the main methods. The general course of treatment requires six to eight weeks.