To see the brain, we need to decide what department to hang according to the cause and symptoms of the brain, as follows: 1. Neurosurgery: If there is a history of brain tumor, you should choose neurosurgery. 2. Neurology: If it is because of dizziness, lightheadedness, weakness and numbness of one side of the limb, choking and coughing, slurred words, acute cerebrovascular disease, or cerebral hemorrhage, or fever, limb convulsions, etc. Intracranial infections, such as viral infections, bacterial infections or cryptococcal infections, should be registered as neurology. Therefore, the choice of neurology or neurosurgery depends on the patient’s symptoms and the specific cause of the disease.