Normally, the cough can be relieved about a week after lung surgery. However, the duration of post-operative coughing varies slightly due to the physical condition of each patient. If the lung surgery went relatively well and the patient is generally in good health, he or she may not develop a cough after surgery. Some patients cannot get out of bed as soon as possible after surgery and need to stay in bed for a long time, which may lead to pneumonic pneumonia, and the cough may last longer. Some patients have undergone lung surgery, but the lesions are not completely removed and a portion of the lesion remains, causing recurrent coughing and sputum. Therefore how long a patient coughs after lung surgery needs to be decided on a case-by-case basis.