Lung cancer is a malignant tumor, and the so-called malignant tumor is a large group of diseases characterized by uncontrolled growth of abnormal cells, which can easily spread and metastasize and cause serious damage to the organism. Lung cancer is a malignant tumor of the respiratory system and ranks the first among all malignant tumors in terms of incidence. At present, the clinical treatment for lung cancer is mainly based on surgery, chemotherapy, radiotherapy, targeted therapy, immunotherapy, etc. Early stage lung cancer is a comprehensive treatment based on surgery, while for middle and late stage lung cancer is a comprehensive treatment based on chemotherapy, targeted therapy, etc.