Complications after esophageal cancer intervention usually include local congestion, edema, pain or bleeding, and even perforation. Judgment should be based on clinical manifestations, for example, persistent unrelieved and pain at the treatment site after treatment, which is a physiological or pathological reaction. The presence of bleeding, such as bright red blood vomiting from the mouth or esophagus, indicates local vascular or tissue destruction. In addition, local pain at the treatment site that does not relieve or involves other organs needs to be considered for the presence of perforation. The adjacent organ to the esophagus is the trachea, and if treatment is prolonged, it can cause lesions in the esophageal area that can penetrate the airway and form a tracheal fistula.