Normal human blood pressure is 90-139mmHg systolic and 60-89mmHg diastolic, and once it falls below this range, it falls into the category of low blood pressure. If you have low blood pressure, try not to eat foods high in salt, oil and fat, such as animal offal, including heart, brain and kidney, fatty meat, fried and barbecued foods. In addition, in the choice of fruits, try not to eat longan, cinnamon, oranges and so on, because these foods are easy to cause fire, which will cause aggravation of the condition. If the blood pressure is abnormally low, go to the hospital to exclude malignant tumors, severe anemia, hypothyroidism and so on. Enhance the intake of high-quality protein, regular exercise, and strengthen the physical fitness in order to make the blood pressure improve.