Classification by blood pressure level At present, China uses normal blood pressure (systolic blood pressure <120 mmHg and diastolic blood pressure <80 mmHg), normal high value (systolic blood pressure 120-139 mmHg and/or diastolic blood pressure 80-89 mmHg) and hypertension (systolic blood pressure ≥140 mmHg and/or diastolic blood pressure ≥90 mmHg) for blood pressure level classification. The above classifications are applicable to men and women, and adults of any age above 18 years old. Zheng Chaoyang, Cardiovascular Disease Specialist, Guangdong Provincial Hospital of Traditional Chinese Medicine