Blood pressure is determined by three factors: myocardial contractility, circulating blood volume and vascular resistance. Patients with low blood pressure should address the causes of these three aspects: 1. The most common are patients with coronary heart disease, this part of the patient should pay attention to a light diet, the usual diet can eat more corn, cereals and other coarse grains, eat more fresh fruits and vegetables, moderate supplementation of fish, lean meat and other high-quality protein. 2, circulating blood volume is insufficient. This part of the patient can be given a high-sodium diet, a diet with an appropriate amount of salt to increase the circulating blood volume and heart volume load. 3, no previous special disease, lean body, low blood pressure patients, this part of the patient should pay attention to the meat and vegetarian mix, you can eat high cholesterol food to supplement blood pressure, such as pork liver, pork. In addition, red dates, spinach, yam, such foods also have a certain role in raising blood pressure.