The primary symptoms of reflux esophagitis include chest pain, upper abdominal bloating, as well as nausea, vomiting, and acid regurgitation. Gastroscopy can reveal the mucosa of the esophagus showing hyperemia, erosion, or ulceration, which can diagnose reflux esophagitis. The treatment for reflux esophagitis involves acid suppression, gastric protection, and promoting gastric motility, typically over a course of six to eight weeks. Patients with reflux esophagitis must pay attention to their diet, opting for light foods and avoiding smoking and alcohol. Foods that are fatty, rich, spicy, fried, grilled, or sweet, as well as milk, soy milk, sticky rice, and sweet potatoes should be consumed in moderation, as they can increase stomach acid secretion or cause gas, worsening the symptoms of reflux esophagitis.