Blood pressure on the right side is higher than on the left side, divided into two factors: physiological and pathological. The formation of blood pressure mainly originates from the blood perfusion of the heart and the elastic compression of blood vessels. In modern society, the right side of the limb is dominant, in which case the muscle strength and elasticity of the right side of the tissue are relatively strong, and the vascular resistance of the right side is greater than that of the left side under physiological factors, which leads to a slightly higher blood pressure on the right side than on the left side in order to ensure the balance of blood supply. A small number of people may suffer from right-sided arterial stenosis, such as atherosclerotic stenosis, and in the early stage when the patency of the blood vessels is better, the blood pressure on the right side will be higher than that on the left side compensatively. If the left side of the blood vessel suffers from severe aortitis or atherosclerotic stenosis, which also prevents the passage of blood, the blood pressure will drop significantly, and a pathological higher blood pressure on the right side than on the left side can also develop.