Esophagitis is mainly an inflammation of the esophagus area due to gastric and esophageal reflux. The mucous membrane of the esophagus is damaged due to reflux of food from the stomach, etc. into the esophagus. In mild cases, there are only symptoms of edema and congestion, and some patients show damage that can only be seen under the microscope. In severe cases, the mucous membrane is broken or even ulcerated under the gastroscope with the naked eye. The main symptoms of reflux esophagitis are chest pain, acid reflux, and heartburn. The symptoms tend to recur, and those with esophageal strictures may have difficulty swallowing. Occasionally, gastrointestinal bleeding may occur when ulcers involve blood vessels, but it is relatively rare. Symptoms of esophagitis and esophageal injury vary in severity. If there is no obvious damage to the esophageal mucosa, those with milder symptoms can have their symptoms relieved and maintain a good quality of life over time without medication by making adjustments to their diet, changing their lifestyle, quitting smoking and drinking, controlling their weight without excess weight, and maintaining good habits. In contrast, significant esophageal inflammation usually requires medication to heal the mucosal damage, and some patients even need to rely on medication for a long time to keep the inflammation of the esophageal mucosa stable. Most patients have recurring symptoms and require intermittent medication to relieve them. The amount of medication used can vary depending on the frequency of the symptoms, called on-demand treatment. Therefore, the relief of esophagitis symptoms depends on the condition and is also influenced by the person’s mental state, which can be aggravated by nervousness and poor sleep. Therefore, it is necessary to adjust the diet in many ways including avoiding strain, eating a light diet, eating less greasy food, having regular rest and rest, and having a balanced diet of meat and vegetables, especially not drinking stimulating foods and drinks. If the symptoms cannot be controlled, it is still necessary to cooperate with drug treatment.