The symptoms of cancer brain metastasis mainly include: 1. More than 70% of patients with cancer brain metastasis will have neurological symptoms, which are manifested as the triad of intracranial hypertension: headache, vomiting and optic papilledema; 2. Depending on the location of brain metastasis, there can be different symptoms, such as neurological abnormalities when metastasis is in the frontal lobe, hearing impairment when metastasis is in the temporal lobe, and motor impairment when metastasis is in the parietal lobe; 3. Symptoms of epilepsy often appear; 4. Patients with brain metastasis develop rapidly and can have acute progressive exacerbation.