The survival of brain metastasis tumor without treatment is only 4 weeks, the survival of whole brain radiotherapy is 3~6 months, and the survival of pure surgical treatment is about 5 months. Early stage patients mostly take whole brain radiotherapy treatment, which has high side effects and low tolerance of patients. With the development of medical technology, gamma knife treatment has been applied in clinic, which greatly improves the survival rate of patients. I. How to choose lung cancer brain metastasis treatment? Surgery, radiotherapy, chemotherapy and stereotactic radiosurgery are the common treatments for lung cancer brain metastases nowadays. Since most of lung cancer brain metastases are round lesions with clear boundary and radiobiological characteristics of early response tissue, they are suitable for radiosurgery. Among them, stereotactic radiosurgery represented by radio knife, gamma knife and X-knife has become an important means of treating lung cancer brain metastases due to its real efficacy and small treatment trauma. Second, which treatment is the best? There are advantages and disadvantages in any treatment, such as brain tumor is relatively large, traditionally, surgical resection is the main first step, and the residual lesions in those important tissue and nerve parts can be treated by gamma knife radiotherapy in a secondary way. Chinese medicine treatment is an auxiliary therapy for the follow-up treatment of brain tumor. Chinese medicine treatment can improve the immunity of the body, improve the comprehensive quality of the patient, and better accept other treatments. Lung cancer three major metastases and treatment modes 1. Lung cancer brain metastasis Lung cancer brain metastasis is a relatively common metastatic lesion, and patients find that it is mostly manifested as dizziness, headache and other symptoms, and if lung cancer patients suddenly appear these symptoms, they should be alert to the occurrence of lung cancer brain metastasis. Then how to treat it? Treatment: Due to the special structural characteristics of lung cancer brain metastasis, the metastatic foci have clear boundaries and are well demarcated from the surrounding normal brain tissues without infiltration foci. For patients with such early stage of brain tumors, if the tumor size is around 3cm, experts recommend stereotactic radiotherapy, which is beneficial to the recovery of the patients and avoids the risk of open surgery. Liver metastasis of lung cancer According to statistics, about 28-33% of lung cancers have liver metastasis. Lung cancer patients with persistent pain in liver area, accompanied by loss of appetite and indigestion should be alert to the occurrence of liver metastasis of lung cancer. How to treat it? Treatment: There are many treatment methods for liver metastasis of lung cancer, such as chemotherapy, gamma knife treatment and biotargeted drug treatment developed in recent years. How to choose these treatments should be considered according to patients’ specific conditions. Lung cancer bone metastasis is also a relatively common site of metastasis, and patients mostly suffer from bone pain, with the longest occurring parts being ribs, spine, sternum, femur and so on. The purpose of treatment for lung cancer bone metastasis patients with metastatic foci is to control the foci, avoid bone destruction and reduce pathological fracture paralysis. The current treatment modalities are besides traditional radiotherapy. Common clinical treatment modalities include: radio wave knife treatment, gamma knife treatment and so on.