Whether central lung cancer can be treated surgically depends mainly on whether the lung cancer stage is stage II or stage III. Usually, surgery can be considered around stage II. However, if central lung cancer is accompanied by contralateral hilar lymph node metastasis and supraclavicular lymph node metastasis, including distant metastasis, such as metastasis in the skull, sternum, pleura, liver, etc., there is no longer any chance of surgery. Central lung cancer is mainly squamous carcinoma, which manifests as cough, coughing sputum, blood in sputum, chest pain, wasting, fever, obstructive pneumonia, obstructive atelectasis, etc. The chance of surgery is relatively low, but it can still be treated surgically after early detection and around stage II, and postoperative chemotherapy is needed to control the recurrence of disease. However, if the central lung cancer is adenocarcinoma, the chance of surgery is relatively low, because adenocarcinoma metastasizes faster and even if surgery is performed, distant metastasis will occur easily and the surgical result is not ideal. Therefore, early detection of central lung cancer is the main reason why surgery is better for patients with squamous carcinoma and worse for patients with adenocarcinoma.