An average adult with a blood pressure greater than or equal to 140 mmHg systolic and 90 mmHg diastolic is considered hypertensive. Normal blood pressure in the general adult population is a systolic blood pressure of less than 140 mmHg and a diastolic blood pressure of less than 90 mmHg, while a systolic blood pressure of ≥140 mmHg, and or a diastolic blood pressure of ≥90 mmHg, fall into the category of hypertension. In addition, a single measurement of abnormal blood pressure is not sufficient to make a diagnosis of hypertension, and three or more measurements taken on a different day should be used as the basis. Hypertension is also graded in terms of severity and urgency based on the amount above the normal threshold and the presence or absence of associated complications. It is recommended to consult a doctor in time for abnormal blood pressure or related signs and symptoms, improve blood pressure monitoring and other auxiliary examinations, and then under the guidance of a doctor’s advice and long-term monitoring and medication according to the specific situation.