There are many items of brain examination, and different examination methods are chosen according to different diseases:1. If it is acute cerebrovascular disease, it is necessary to check the cranial CT to clarify the nature of cerebrovascular disease, and to know whether the patient is ischemic cerebrovascular disease, and for the lesions that can not be determined by the cranial CT, it is necessary to timely perform the examination of cranial magnetic resonance.2. For the examination of epilepsy, it is necessary to do the electroencephalography examination, and try to examine the patient during the onset of the disease.3, If it is a neurological infectious lesion, in addition to cranial CT and other imaging tests, it is necessary to do cerebrospinal fluid examination, cerebrospinal fluid bacterial culture and other tests, as well as detecting the pressure of the cerebrospinal fluid.4, the occurrence of subarachnoid hemorrhage in the patient may be caused by cerebral aneurysm, timely cerebral arteriography of the examination, a definitive diagnosis.5, recurrent dizziness of the patient to check the carotid artery ultrasound, cervical spine X-ray film.