Esophagitis is a disease in which inflammatory changes such as congestion, edema or even erosion of the esophageal mucosa occur. Modern medicine believes that esophagitis can be caused by infection as well as physical and chemical factors that damage the esophagus. According to the course of the disease is divided into acute and chronic, chronic is clinically common; according to the cause can be divided into reflux, alcohol, infectious, ingestive, drug esophagitis, etc., the clinical reflux esophagitis is the most common. The most common site of onset is in the lower and middle esophagus, with the most frequent in the lower section. It can develop at any age, and is more common in men than in women. Esophagoscopy and tissue biopsy can be diagnosed. Chronic esophagitis is closely related to carcinogenic and pro-carcinogenic substances, heavy increase in esophageal epithelium and atypical hyperplasia. Abnormal manifestations: (1) Burning pain: It is a burning sensation or burning pain behind the sternum or under the glabella, which is sudden or progressive, and the pain is aggravated by eating and drinking especially when eating too cold and too hot as well as spicy food, sometimes accompanied by acid reflux. (2) Dysphagia: intermittent at first, often coexisting with burning pain behind the sternum or under the glabella. (3) Erosion and bleeding of the esophageal mucosa may lead to anemia in the long term, with pallor and atrophy, dizziness and palpitation, shortness of breath, etc. (4) Some patients may have posterior sternal occult cancer or mild pressure pain under the sternal process when pressing the sternum. 3.Treatment In recent years, more attention has been paid to the treatment of this disease, and most cases are treated effectively by internal medicine. (1) Western medicine treatment principle of reflux esophagitis is to reduce gastroesophageal reflux, avoid irritation of reflux and improve the functional state of lower esophageal sphincter, such as antacids, non-receptor antagonists and the rational application of gastrointestinal motility drugs. (2) Chinese medicine is based on the principle of evidence-based treatment and has achieved good results, such as Donglingcao, Zeng Sheng Ping, Liu Wei Di Huang Wan, etc. 4, preventive care: (1) avoid long-term consumption of irritating foods or drugs, such as tomato-based foods, high-fat foods, alcohol, aspirin, etc. (2) Eat less and more meals, change the habit of full meals, and do not overly gird your waist or belt too tight after meals. (3) Do not rest in bed immediately after the meal, and elevate the head of the bed at night to prevent food reflux. (4) If you are overweight, try to reduce your weight.