According to the definition of hypertension guidelines, the diagnostic criteria for hypertension are systolic blood pressure ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg, and this diagnostic criterion applies to all hypertensive patients, including the elderly. Normal blood pressure is also divided into the following three levels: 1. ideal blood pressure level with systolic blood pressure below 120 mmHg and diastolic blood pressure below 80 mmHg; 2. normal blood pressure with systolic blood pressure of 120-129 mmHg and diastolic blood pressure of 80-84 mmHg; 3. normal high blood pressure with systolic blood pressure at 130-139 mmHg and diastolic blood pressure at 85-89 mmHg. elderly people Normal blood pressure is still below 120mmHg, and greater than 140mmHg is considered hypertension. However, for patients with hypertension, different standards exist for the target value of blood pressure reduction in different age groups. In order to ensure organ perfusion in the elderly, for those aged 65-80 years, a blood pressure reduction target control of about 140/90 mmHg is sufficient, and those who can tolerate it are recommended to be below 130/80 mmHg. For elderly people older than 80 years old, the systolic blood pressure target can be relaxed to about 150mmHg.