Inclusion Criteria:  ①The patient underwent thoracoscopic lung surgery; ②There was no obvious pulmonary infection before the operation; ③Good audiovisual function, no communication barriers, able to cooperate with nebulized inhalation operation; ④Patients informed consent to this study.  Exclusion Criteria:  ①Patients with mental illness; ②Acute COPD; ③Serious complications or failure of important organs after operation.