High pressure is normal low pressure is below 60mmHg, you may experience dizziness, weakness and other hazards. Normal blood pressure value is between 90/60mmHg~140/90mmHg. If the high pressure is normal and the low pressure is lower than 60mmHg, it is not within the normal range and belongs to low blood pressure, which may cause dizziness, fatigue, black eyes and other hazards, but most of them can be relieved after dietary regulation, proper rest and reasonable exercise. If the symptoms are not relieved for a long time, we should consult a professional doctor for a comprehensive diagnosis. When the blood pressure fluctuates, it is necessary to pay attention to the regular monitoring of blood pressure changes, monitoring the changes of symptoms, and the emergence of uncomfortable symptoms to consult a doctor in a timely manner. Daily attention should be paid to a reasonable diet, strengthen the exercise, avoid bending at the waist, avoid getting up directly, and so on.