Patients with small physiological pulse pressure are most often seen to be lean or weak, while patients with small pathological pulse pressure often suffer from shock, blood vessels, severe mitral stenosis, aortic stenosis and other diseases. When patients have symptoms of small pulse pressure, they should go to the hospital for examination in a timely manner. During the examination, the physiological pulse pressure is small and pathological pulse pressure is small for diagnostic differentiation. 1, physiological pulse pressure small patients often manifest as the extremities are not warm, fear of cold and like warmth, fatigue, like to eat hot food, sleep more, loose stools, urine clear and long, the tongue body is fat and tender side has teeth marks, moss moist, pulse sinking late and weak. The body gradually slims down, the heart is troubled with red cheekbones, the heart of the hands and feet is hot, especially in the afternoon, the mouth is dry, the eyes are dry, dizziness and tinnitus, poor sleep, dry stool, the tongue is red with little coating and dry, and the pulse is fine. However, there is no great discomfort and it does not cause organic lesions in the body. 2, pathological pulse pressure small patients in the examination, generally the body will occur organic lesions, common vascular elasticity is reduced mainly due to a large number of lipid and calcium salt deposits under the intima and intima smooth muscle muscle layer hyperplasia caused. It is also influenced by various factors such as patient’s age, gender, endocrine, lipid metabolism and glucose metabolism. In general, the older the age, obesity, blood viscosity or combined with diabetes mellitus and hyperlipidemia, vascular elasticity is significantly reduced. Warm tip: When the symptoms of small pulse pressure are found, various organic pathologies should be ruled out first, such as after detailed examination, for the causes of the small pulse pressure for related treatment, prevention and health care.