Inclusion Criteria:  Those diagnosed as lung nodules requiring thoracoscopic surgery. Those who have no previous mental illness and have not used anti-anxiety or psychotropic drugs within 2 weeks. Those who have clear consciousness, normal understanding, no expression barriers, can cooperate with treatment and have signed an informed consent.  Exclusion Criteria:  Patients who have received TEAS treatment in the past. Patients with skin infections in local meridian points. Patients with upper or lower limb nerve injury. Patients who have participated in or are participating in other clinical trials one month before enrollment.