Advanced lung cancer refers to lung cancer with distant metastasis, and there is no fixed survival time when lung cancer is diagnosed to be advanced and spread. Survival period is relatively short, but with the research of immune drugs in recent years, combined with chemotherapy and radiotherapy, the survival time is significantly extended. Except for some patients with poor treatment effect of primary drug resistance, the survival time of most patients can be extended from several months to several years; 2. Non-small cell lung cancer: mainly includes adenocarcinoma and squamous carcinoma. Patients with advanced adenocarcinoma can continue to survive for months to 3-5 years or even longer in some cases through genotyping and oral targeted drugs. Patients with advanced squamous lung cancer can also achieve relatively long survival through immunotherapy combined with chemotherapy and radiotherapy. Therefore, the survival time of patients with advanced lung cancer cannot be generalized. It is recommended to go to regular hospitals and take pathology through lung puncture or bronchoscopy, etc. for clear diagnosis. According to different pathologies and tumor stages, professional oncologists will formulate the most suitable treatment plan, and patients can hope to continue to survive. It is advisable to choose light, easy to digest and nutritious food in normal diet, supplement with high quality protein such as fish, lean meat and eggs. Family members should do a good job in psychological guidance, try to make patients calm, avoid depression and anorexia, which will affect the treatment effect and life expectancy.