How long can lung cancer metastasis live mainly depends on the malignancy degree of tumor and metastatic site, and cannot be generalized. If bone metastasis occurs in lung cancer, it may affect the quality of life of patients, but it does not affect the survival time of patients. If liver metastasis occurs in lung cancer, for patients with small cell lung cancer liver metastasis, the survival time can generally reach 1-3 years after effective treatment, but if the treatment is not active, the survival time is usually less than 1 year. For patients with non-small cell lung cancer liver metastasis, even if the stage is late, if they can tolerate radiotherapy, targeted therapy, etc., they can usually survive for 1-2 years. If lung cancer metastases to the pancreas occur, patients’ survival depends on whether the treatment is effective or not, and the survival period may be around 3-6 months. Patients with lymphatic metastases from lung cancer can survive for more than 2 years after surgery and radiotherapy. Since the early symptoms of lung cancer are not obvious and not easy to be detected, it is recommended to have regular health checkups every year for early detection and early treatment. Patients who are found to have lung cancer should seek professional medical help from oncology departments of regular hospitals in a timely manner and actively cooperate with the treatment in order to prolong the survival time.