The normal differential pressure in humans is between 20-40 mmHg, mostly 30-40 mmHg. If the differential pressure is too high, atherosclerosis may be present, and a low differential pressure may be caused by high diastolic blood pressure. In this case, whether the differential pressure is too high or too low, you should promptly visit the circulatory department, monitor the blood pressure, and provide timely treatment according to the results. Usually, we should pay attention to diet, balanced nutrition, pay attention to rest, avoid straining, prevent arteriosclerosis, and adhere to appropriate exercise, which will help control blood pressure and be healthy. Patients with hypertension should try to adhere to a low-salt, low-fat, light diet and take appropriate vitamin and folic acid supplements to help prevent atherosclerosis and reduce the risk of cardiovascular disease. Such patients should regularly review their blood lipids and blood sugar at the hospital and try to control them within the normal range.