The consensus was established based on some questions of cerebral and carotid ultrasound examination in practice through the collection, elucidation and explanation by three professional committees in the field of vascular ultrasonography, including the Professional Committee of Vascular Ultrasound of Stroke Prevention and Treatment Expert, Committee of the National Health Commission; the Professional Committee of Superficial Organ and Peripheral Vascular Ultrasound of the Chinese Medical Ultrasound Engineering; the Professional Committee of Craniocerebral and Cervical Vascular Ultrasound of the Chinese Medical Ultrasound Engineering, in order to promote the professional field and the level of technology standardization. It has important value in clinic leading and professional guidance.