CT examination is the first choice for successive clinical suspicion of cerebral hemorrhage. CT can show fresh hematoma as a homogeneous high-density area after the onset of the disease. MRI examination in the acute phase for supratentorial and cerebellar hemorrhage is not as valuable as CT for brainstem hemorrhage is better than CT after the course of the disease – weeks when CT can not identify cerebral hemorrhage MRI can still clearly distinguish between old cerebral hemorrhage and cerebral infarction; can show the flow space phenomenon of vascular malformation MRA is more likely to detect arthritis cerebrovascular malformation hemangioma and tumor and other causes of bleeding hematoma and surrounding brain UK tissue MRI performance is more complex It is mainly influenced by the changes in the amount of hemoglobin contained in the hematoma ① Hyperacute phase (w): long T and long T signal. Digital subtraction cerebral angiography suspected cerebrovascular malformation Moyamoya disease vasculitis and other feasible DSA examination especially accumulation is normal blood pressure of young patients should be considered to identify the cause. Cerebrospinal fluid examination increased cerebral pressure CSF is mostly washed water-like homogeneous blood because of the risk of induced cerebral herniation is only performed when a young head CT examination cannot be performed and there is no obvious clinical manifestation of increased intracranial pressure in the medical department suspected cerebellar hemorrhage prohibited lumbar puncture. Should also be cited for routine blood, urine and stool and liver, kidney function, coagulation function, electrocardiogram, blood glucose and electrolyte examination.