With the continuous improvement of ultrasound diagnostic technology, ultrasound examination of the blood vessels in the brain is now being paid more and more attention to. Ultrasound of the brain is about 100 yuan, which can have important diagnostic value for the diagnosis of stenosis and occlusion of the blood vessels inside and outside the skull, whether the walls of the blood vessels are smooth, observe the elasticity of the blood vessels, observe the direction of blood flow, and observe whether there is stenosis and occlusion of the blood vessels inside and outside the skull. Brain ultrasound can also be used for the diagnosis of diseases of intracranial conditions in children whose cranial sutures have not yet closed, and can diagnose brain herniation, hydrocephalus, cerebral hemorrhage and other diseases.