The maximum survival time of lung cancer metastasized to lymph nodes cannot be generalized, and the maximum survival time varies from person to person. After diagnosis of lung cancer, if there is only metastasis to the neighboring lymph nodes, the five-year survival rate can be more than 50% through active surgical treatment and postoperative comprehensive treatment. For early stage lung cancer with metastatic lymph nodes, the five-year survival rate can reach more than 80%, and even some people can survive for a long time after comprehensive treatment based on surgery and postoperative adjuvant chemotherapy or targeted therapy. And advanced lung cancer that has metastasized to contralateral lymph nodes or has distant metastasis may lose the chance of surgery. Therefore, after diagnosing the disease, comprehensive treatment or targeted therapy based on chemotherapy should be actively adopted. Statistics show that the five-year survival rate of most people with lung cancer metastasized to lymph nodes can reach 40%-50% if they are treated actively. Therefore, lymph node metastasis of lung cancer should be analyzed specifically, and then the survival period should be judged comprehensively according to lymph node metastasis, tumor type and treatment.