Blood pressure refers to the flow of blood pressure in the blood vessels, the lateral pressure on the walls of the blood vessels, it forms the blood pressure. For the cardiovascular system blood pressure is formed by the following factors: first, the ejection capacity of the heart, first of all, to ensure that the heart can shoot blood outward. This gives a power, and this power is then converted into energy. The ability to circulate within the blood, the circulation process will produce pressure on the walls of the blood vessels, the unit of pressure used is mmHg. generally speaking, 120, 80 mmHg or less is the ideal blood pressure. Second, the formation of blood pressure cannot be separated from the heart’s ability to eject blood, and then is the elasticity of the blood vessel wall, if the blood vessel wall is not elastic, it is also difficult to form pressure. Therefore, for the formation of blood pressure is mainly with two aspects, one is the heart’s ability to eject blood, and the second is the degree of elasticity of the blood vessels in the peripheral circulation. The above content is for reference only, specific medication and treatment should be based on the guidance of the doctor’s interview.