The sinking pulse is also called the sunken pulse. The sunken pulse is the pulse that does not respond when taken lightly and is obtained when pressed heavily, and the main characteristic is that the pulse appears deeper at the site. The sunken pulse is usually the main evidence of the inner evidence, because the evil Qi is depressed and closed inside, and the Qi and blood are trapped inside, so the pulse is seen as sunken. The formation of the sunken pulse has a certain correlation with the amount of bleeding from the heartbeat, peripheral vascular resistance and the state in which it is located. The decrease in the amount of bleeding from the heart transfusion and the decrease in blood pressure will result in a decrease in intravascular pressure, and the lack of blood volume is the main cause of the sunken pulse, so the diseases that can be seen in the sunken pulse include chronic wasting diseases or some malnutrition diseases, such as chronic liver disease and tuberculosis. In addition, there are diseases with symptoms of reduced cardiac output, including some cardiomyopathies or aortic stenosis, where the pulse is often sunken and weak.