The time for the results of lung adenocarcinoma genetic test to come out depends on the items tested. If the test simply detects three genes, such as EGFR , ALK and ROS1, the results will come out in two working days. If the gene of the immunoassay site, PD-L1, is tested, it will take 5-7 days to come out. If 9 or 15 genes such as KRAS gene, BRAF gene, HER2 gene are included, it will take 10-15 days to come out. Compared with the three traditional treatments of surgery, radiotherapy and chemotherapy, molecular targeted therapy has better molecular and cellular selectivity, which can efficiently and selectively kill tumor cells and reduce the damage to normal tissues. It is the clinical goals that are difficult to achieve with traditional chemotherapy and radiotherapy. With the progress of lung cancer molecular biology research and the elucidation of cell proliferation, differentiation and apoptosis information pathways, anti-tumor biomolecular targeted drugs have entered the clinic to reduce toxic side effects and improve patient survival, bringing new hope to patients.