The blood pressure of the human body is always in a state of change with time. There is a certain range of fluctuation in blood pressure from day to day, and although it is all within the normal range, it is different from moment to moment, fluctuating mostly around 20 mmHg. If strenuous exercise or emotional stimulation, the range of blood pressure fluctuation may be greater, and the amount of daily activity, mental state, diet and other aspects all have a certain impact. Generally, as long as it is within the normal range, there is no need to worry too much. Pay attention to a low salt and light diet, ensure balanced nutrition and a relaxed mood, and maintain diastolic blood pressure between 60-90mmHg and systolic blood pressure between 90-140mmHg is fine.