The esophageal stent is generally placed for 3 to 6 months. After 3 to 6 months, the continuous expansion effect has appeared, and the symptoms of dysphagia have been relieved, so we took out the stent. If the esophageal stenosis is caused by malignant tumors, such as esophageal cancer and cardia cancer, and surgery cannot be accepted, a fully covered esophageal stent is placed.