The common symptoms of reflux esophagitis include chest pain, bloating in the upper abdomen, belching, acid reflux, nausea, vomiting, etc. If these symptoms occur, it is recommended to go to the hospital for a gastroscopy. If the gastroscopy reveals damage or ulcers on the mucous membrane of the esophagus, it can be diagnosed as reflux esophagitis. Reflux esophagitis is classified into four grades based on the size of the mucosal damage. Grade A is the lowest and as the grade increases, it indicates a higher severity of the condition. Once the diagnosis is confirmed, standardized treatment should be administered. The treatment mainly includes acid suppression, promoting gastric motility, and protecting the mucosa. The general course of treatment lasts about eight weeks, after which the symptoms can disappear, and the disease can be cured.