The recovery time of hoarseness after lung resection surgery varies according to different reasons. First, postoperative hoarseness may be related to intraoperative injury or stimulation of the recurrent laryngeal nerve. If it is a minor contusion, nerve-nourishing drugs can be used and recovery can be gradual in about 3-6 months; if it is a more serious injury, the recovery time will be extended to more than one year; if the recurrent laryngeal nerve is cut, then it will be permanent hoarseness. Secondly, intraoperative or postoperative tracheal intubation leading to airway mucosa damage can also lead to hoarseness. Through timely extubation and standardized care, including the use of drugs to reduce airway edema, such as glucocorticoid spray, taking lung-clearing and lung-moistening drugs, and proper use of antibiotics to prevent bacterial infection, the voice can gradually improve in about 1 month. Thirdly, if hoarseness occurs after lung tumor resection, it is necessary to be alert to the recurrence of tumor and compression of nerve.