Brain CT is mainly used to check cerebrovascular diseases or intracranial tumors, etc. There is no clinical argument that young people are not allowed to have brain CT, probably just because the patient has no indications. Doctors can make a preliminary judgment based on the patient’s symptoms at the time of medical consultation, and consider that the possibility of cerebrovascular disease or intracranial tumor is small, and the purpose of examination and treatment can be achieved by using other medical means, so there is no need to perform brain CT examination, thus spending extra costs as well as taking up medical resources. CT of the head is an imaging test that shows the structures of the brain and plays an important role in the diagnosis of cerebral hemorrhage, cerebral infarction or intracranial occupational lesions. However, CT brain examination also has some limitations. When the clarity and accuracy are poorly displayed, MRI can be further improved to clarify the exact nature of the lesion. If a young person has symptoms of neurological deficits or acute cerebral infarction, it is suspected that it may be caused by cerebrovascular disease or intracranial tumor, and then a brain CT examination should be performed to determine the cause and provide targeted treatment. To determine the cause of the disease and carry out targeted treatment. Patients should follow the doctor’s instructions to perform the appropriate tests, and the doctor will make a judgment on the specific situation without unnecessary tests.