High peripheral cardiac resistance usually refers to the resistance to blood flow, which may be caused by physiological factors such as age or pathologic factors such as hypertension. 1. Physiological factors: with age, the elasticity of the aorta will gradually weaken, resulting in increased resistance to blood flow. 2. Pathologic factors (1) Hypertension: some hypertensive patients, due to peripheral vasoconstriction, increased vascular tension, etc., will experience dizziness, headache and other symptoms, when the area of small arteries or capillaries decreases, then there will be increased resistance to blood flow. (2) Atherosclerosis: In people with atherosclerosis, blood viscosity increases, leading to increased resistance to blood flow. (3) Aortic stenosis: When the aorta is narrowed, blood flow is blocked, which leads to an increase in peripheral vascular resistance, causing high resistance to blood flow. There are many other causes of high blood flow resistance, so it is recommended to consult a doctor in a timely manner to determine a guiding program under the guidance of a doctor.