Esophageal wall fibrosis refers to chronic and repeated damage from esophagitis that can cause destruction and fibrosis of the entire esophagus, resulting in esophageal stricture. Esophagitis refers to inflammation of the superficial or deep tissue of the esophageal mucosa due to abnormal stimulation and edema and congestion of the esophageal mucosa. Etiology: 1, swallowing hot food, sharp foreign bodies or inadequately chewed bones, accidental ingestion of corrosives and other direct damage to the esophageal mucosa causing inflammation. 2, physical or chemical esophagitis: radiation exposure-induced esophagitis reaction is called radioactive esophagitis. Drugs such as quinidine, tetracycline, potassium chloride, iron, etc. stimulate the esophageal mucosa, especially tablets stagnant in the esophagus, can also cause esophagitis. Esophagitis caused by overheated food can heal quickly on its own. Long-term use of a gastric tube, which stimulates the esophagus, can also cause esophagitis. 3. Antibiotics are used for too long, leading to infection caused by proliferation of fungus in the esophageal mucosa. Diagnosis: 1. Most occur over the age of 40. In normal people, the lower esophageal sphincter acts as a barrier, so that the stomach contents do not easily flow back into the esophagus. 2.When this sphincter is dysfunctional, such as a hiatal hernia or other reasons that make this sphincter incompetent, the stomach contents can flow back into the esophagus. The gastric juice contains acid and may also contain bile or pancreatic juice. These substances have a damaging effect on the esophagus, and long-term repeated reflux into the esophagus can cause inflammation, erosion, and even ulceration in the esophageal mucosa. Chronic and repeated damage can cause destruction and fibrosis of the whole esophagus, resulting in esophageal stricture. The clinical manifestation is mainly heartburn, which appears at night when lying down and is relieved when sitting up, which is the typical manifestation. The increase in abdominal pressure when lifting heavy objects can also cause reflux to occur. 4, certain foods such as orange juice to stimulate the lesion, can cause symptoms. 5, X-ray barium meal imaging, such as barium can be seen between the esophagus and the stomach can flow up and down, as a basis for diagnosis. 6.Esophagoscopic observation shows white flaky exudate, erosion, ulcer and easy bleeding in the wall of esophagus.