Peripheral vascular signs are mainly examination means, a phenomenon reflected by physical examination, and are mainly seen in diseases with increased pulse pressure due to hyperthyroidism, severe anemia, and aortic valve closure insufficiency. For people with vascular abnormalities, it is often necessary to examine peripheral blood vessels, excluding some auxiliary examinations, such as blood lipids, blood pressure, blood routine, ambulatory electroencephalogram, ambulatory electrocardiogram, brain CT, brain MRI, and other examinations. Peripheral vascular signs belong to physical examination, which mainly include capillary pulsation signs, gunshot sounds, double sounds, carotid pulsation with head nodding, alternating pulses, odd pulses, flooding pulses, etc. Positive signs that can be obtained by palpation and auscultation alone, with the subject relaxed and in a proper position, are of high diagnostic value for people with insufficient blood supply to the heart or cardiomyopathy, and are a special type of examination.