The formulation of the guidelines for the clinical diagnosis and treatment of lung cancer in line with China's national conditions and multiple discipline cooperation plays an important role in standardizing prevention measures and improving the diagnosis and treatment of lung cancer in China. In order to further improve the diagnosis and treatment of lung cancer in China, improve the outcomes of patients, and provide professional evidence-based medicine advice to clinicians at all levels, the Chinese Medical Association organized specialists in departments of pulmonary medicine, oncology medicine, thoracic surgery, radiotherapy, radiology and pathology throughout the country to perform the work. The recent advances in pathology, genetic testing, immuno-molecule testing, and therapeutic approaches were integrated and the guideline was formulated in combination with international guidelines and China's national conditions. The guideline aims to provide evidence-based, guidance for clinicians at all levels. The guideline covers the screening, diagnosis, pathology, treatment and follow-up of lung cancer.