Brain metastasis of lung cancer is mainly due to the compression of speech center by tumor, which requires systemic and local radiotherapy and chemotherapy. After brain metastasis of lung cancer, as the tumor continues to grow, it will cause extrusion and invasion to the surrounding tissues and nervous system, and once it presses the speech center, the patient will be lucid but unable to speak, so targeted treatment is needed to reduce the size of the tumor, and speech will be restored only after the compression is lifted. Patients with brain metastasis of lung cancer who are conscious but unable to speak first need to undergo local stereotactic radiotherapy for the metastatic site to reduce the size of the tumor, and at the same time, need to cooperate with systemic chemotherapy, targeted therapy, and so on.