Primary systolic blood pressure140-159mmhg, diastolic blood pressure 90-99mmhg;

Secondary systolic blood pressure 160- 179, diastolic blood pressure100-109;

The third-grade systolic blood pressure exceeds 180, and the diastolic blood pressure exceeds 1 10.

In addition, risk stratification can be carried out according to classification and complications. The third level is high risk or extremely high risk, and diabetes or other diseases are extremely high risk.