Inclusion Criteria:  Meet the diagnostic criteria for esophageal cancer; Age 50-70 years old; Undertake radical surgery for esophageal cancer, and place a tube through the nose after surgery; The patient communicates well with no cognitive impairment; Informed consent for this study, signed informed consent .  Exclusion Criteria:  Patients undergoing mechanical ventilation after surgery; Serious complications and death after surgery; Patients with external ear diseases and skin damage; Participating in other clinical research projects.