We will develop precision medical research on lung cancer and conduct in-depth research in the field of pathogenesis, clinical diagnosis and prognosis of lung cancer, especially the basic research and clinical application of molecular pathology of lung cancer. To provide a basis for personalized treatment of lung cancer. With the development of medicine, the current medical practice model has been transformed into precision medicine. The medical principles have been transformed from descriptive and empirical medicine to evidence-based medicine. Disease diagnosis has been transformed from relying on histopathology to relying on histopathology+molecular mechanism. Disease classification has been changed from following the development of medicine. Now the medical practice model has been transformed into precision medicine. The medical principles have been transformed from descriptive and empirical medicine to evidence-based medicine, Disease diagnosis has changed from relying on histopathology to relying on histopathology+molecular mechanism. Disease classification has developed from the cellular level to the molecular level. Disease treatment has developed from single treatment to personalized treatment. Based on biomarker detection and mechanism based intervention treatment, disease prognosis assessment is more accurate and forward-looking.