Elderly patients with squamous lung cancer are recommended to undergo genetic testing. Elderly patients with squamous lung cancer are physically weak and can hardly bear the side effects brought by traditional radiotherapy and chemotherapy, and they are often found to be in the advanced stage, so active genetic testing can help to determine the gene mutation situation, so as to screen for suitable targeted therapeutic drugs, enhance the therapeutic effect and prolong the survival cycle. Gene test for squamous lung cancer mainly includes EGFR, ALK, ROS1 and BRAF gene screening. In case of EGFR gene mutation, targeted drugs such as afatinib can be used for treatment, which can accurately act on the tumor tissues to control the condition and inhibit the growth of the tumor, and those with outstanding therapeutic effect can prolong their survival period for 1 to 2 years.