Lung cancer stage IV generally refers to lung cancer stage IV, which indicates that the patient is in the advanced stage of the disease but still able to take relevant treatment measures. Stage IV lung cancer belongs to the advanced stage, in which the cancer cells show pleural metastasis, pleural effusion or multiple metastases in the whole body. For patients with stage IV lung cancer, they can generally cooperate with doctors to take relevant therapeutic measures, such as molecular targeted therapy, radiotherapy, chemotherapy, interventional therapy, etc., which can help alleviate the uncomfortable symptoms caused by the disease, control the progression of the disease, and improve the survival period, etc. In addition to cooperating with doctors, patients with stage IV lung cancer can also take relevant therapeutic measures. In addition to cooperating with doctors, patients with stage IV lung cancer can keep their body and mind happy by confiding in others and listening to music, etc. If necessary, they can consult doctors for psychotherapy. In daily life, attention should be paid to the balanced intake of nutrients, and those who have difficulty in eating can use enteral nutrition or parenteral nutrition to meet the needs of the body. It is suggested that patients with stage IV lung cancer should actively cooperate with doctors and pay attention to regular medical checkups so as to adjust the treatment plan according to the change of condition. If coughing, worsening chest pain or hemoptysis occurs in the course of treatment, doctors should be informed in time to take treatment measures.