There are many reasons for children to get esophagitis, the more common one is reflux esophagitis, and it is also seen in chemical corrosion, infectious esophagitis, radioactive esophagitis and so on. 1. Reflux esophagitis: esophagitis caused by long-term corrosion of the esophagus due to reflux of gastric acid into the esophagus. The main cause of esophagitis is the relaxation of the lower esophageal sphincter, which is caused by factors such as long-term intake of high-fat, chocolate and other foods, hiatal hernia of the esophagus and so on. 2. Chemical corrosion: accidental intake of liquids with corrosive effects, such as detergents, disinfectants, etc., causes corrosion of the esophagus, leading to corrosive esophagitis. 3. Infectious esophagitis: mostly caused by pus-fungal infections, but also seen in fungal infections, mostly occurring in children with low immunity. 4. Radiation esophagitis: Less common, it occurs in children who have been exposed to radioactive substances for a long time or have received chemotherapy. If a child develops symptoms related to esophagitis (e.g., burning sensation behind the sternum, difficulty in swallowing, etc.), he or she should consult a doctor in time in order to identify the cause of the disease and standardize the treatment.