The application scope of esophageal stent: fibrotic obstruction caused by esophageal cancer after radiotherapy, esophageal cancer complicated by esophagotracheal fistula, esophageal mediastinal fistula, patients who cannot tolerate other treatments at late stage and cannot eat, esophagogastric anastomotic stenosis that cannot be cured by repeated dilatation, stenosis after chemical burn of esophagus, and local recurrence after surgery or radiotherapy, etc. By placing esophageal stent, patients can resume normal eating and greatly The placement of an esophageal stent can restore normal feeding, which greatly improves the patient’s quality of life and effectively prolongs the patient’s survival. This treatment is simple and does not require open-heart surgery. The treatment is effective, and the patient can eat within a few hours after stent placement, with few complications and quick recovery. In addition, the cost of this treatment is low and easily accepted by patients. Patients can undergo Ir-192 intracavitary brachytherapy after stent placement, which is more effective when combined with Chinese herbal medicine treatment.