Patients with advanced stage of lung cancer often have the symptom of dizziness, and the reasons for dizziness are as follows: i. Many patients with advanced stage of lung cancer have craniocerebral metastasis, and clinically there are the manifestations of increased intracranial pressure as well as damage to the nervous system, which can be manifested as dizziness, and after craniocerebral metastasis occurs in advanced stage of lung cancer, due to the increase of intracranial pressure, there will be fluctuation of blood pressure as well, and many patients will have hypertension, which will also lead to dizziness in the clinic. Second, due to the progression of lung lesions in advanced stage of lung cancer, long-term chronic hypoxia, thus prone to complications of pulmonary encephalopathy, will also lead to dizziness. Thirdly, many patients with advanced stage of lung cancer will have systemic symptoms such as anemia, and dizziness will also occur when anemia is serious.