Lung cancer is one of the most common malignancies and the main cause of death is brain metastasis. In recent years, the incidence of lung cancer has been increasing year by year, and the incidence of lung cancer brain metastases has also increased. Nowadays, the treatment methods for lung cancer brain metastases are: 1.radiation therapy. 2.Stereotactic radiotherapy. 3.Preventive whole brain radiotherapy. 4.Surgical treatment. 5.Chemotherapy. 6.Surgery combined with radiotherapy and chemotherapy.