The capillary pulsation sign is an auxiliary test to check whether the blood vessels are normal. When the patient’s nail is pressed lightly with a finger or the mucous membrane of the patient’s mouth and lips with a slide, it can make the area white, and when the heart contracts, the area is red again. (See severe aortic valve insufficiency or peripheral capillary wall dilatation) This examination can determine the location of the lesion and the corresponding signs. When the patient’s nail bed is pressed lightly with a finger or the mucous membrane of the mouth and lips is pressed lightly with a clean slide, there is no rhythmic microvascular pulsation with alternating red and white color, and the state of blood filling returns immediately after the pressure. Capillary pulsation examination items: 1. Cardiovascular angiography Cardiovascular angiography is the rapid injection of contrast agent into the heart cavity or blood vessels through the cardiac catheter, so that the heart and blood vessel cavities are visualized under X-ray irradiation, and at the same time, there are methods such as rapid film, television photography or tape recording to film the visualization process of the heart and blood vessel cavities, from the results of the visualization, we can see the sequence of blood flow containing contrast agent, as well as the filling of heart vessels It is a valuable method to diagnose the heart and blood vessels. It is a valuable method for diagnosing cardiovascular diseases. Doppler echocardiography can be used to analyze the thickness of the heart wall, the speed, amplitude, slope and trajectory of high-speed motion of the valves, the direction of blood flow and the nature of blood flow. When the patient’s nails are lightly pressed with a finger or the mucous membrane of the patient’s mouth and lips with a slide, it can make the local area white, and when the heart contracts, the local area is red again, and the regular alternation of red and white with the heart cycle is the capillary pulsation sign. (See severe aortic valve insufficiency or peripheral capillary wall dilatation) Through this examination, we can determine the location of the lesion and the corresponding signs.