Interventional treatment for esophageal cancer is a physical or chemical method to treat or stop the development of esophageal cancer lesions mainly through interventional means, which can be simply divided into the following categories: 1. 3.If esophageal cancer lesions block the esophageal cavity and cause obstruction, stents can be placed to open the obstructed area and restore the smooth function of esophagus to achieve the treatment purpose.