Sacral tumor metastasis to the lungs suggests that the tumor is in the advanced stage, how long can live in the clinic there is no clear data statistics, most of the patients can only survive for 1~2 years. Most sacral tumors are benign tumors, but if metastasis to the lungs is found, it is considered to be malignant tumors, usually chondrosarcoma. Sacral tumor metastasis suggests that the tumor has developed to an advanced stage, and the prognosis of the patient is relatively poor, the survival time is drastically reduced, and most patients may only survive for 1~2 years. If patients keep a good mood and actively cooperate with doctors to carry out radiotherapy and other auxiliary treatments, they can prolong their life to a certain extent. However, if patients do not take active treatment, the survival time is relatively short, and may only be able to survive less than one year. Patients are advised to maintain a good mood, choose the appropriate treatment and take an active role in the treatment. Daily nutrition should be strengthened to provide nutritional support for the body.