Abstract:Lung cancer is a malignant tumor with the highest morbidity and mortality worldwide at present. As the global population is tend to aging, the morbidity and mortality of geriatric lung cancer is on the rise now, and the overall survival is poor. Therefore, early diagnosis is the key to improving the prognosis of lung cancer. This article discusses the status quo, advances and problems of diagnosis for lung cancer, and expIores the direction of future research.