The 24-hour blood pressure test includes systolic blood pressure, diastolic blood pressure, and mean arterial pressure. 1. Systolic blood pressure: It refers to the pressure of blood flow on the arterial wall when the heart contracts. If the systolic blood pressure is greater than 140mmHg, it suggests that there is high blood pressure, and below 90mmHg may be low blood pressure. By monitoring blood pressure over a 24-hour period, it is possible to see how blood pressure changes around the clock. 2. Diastolic blood pressure: This refers to the role of the blood in the diastole of the heart between 60-90mmHg. Diastolic blood pressure greater than 90 mmHg may be high blood pressure, and less than 60 mmHg may be low blood pressure. 3. Mean Arterial Pressure: represents the average pressure of blood in the cardiac circulation against the walls of the blood vessels, i.e., diastolic pressure + 1/3 pulse pressure difference. The 24-hour blood pressure monitoring program also includes the maximum and minimum values of systolic and diastolic blood pressure, and the trough-to-peak ratio. Unaffected by sleep and activity, it is relatively accurate and provides a more comprehensive picture of overall blood pressure. It is recommended that patients complete this test in the hospital, which is important for determining hypertension and the effect of lowering blood pressure.