Patients with hypertension are graded once they are diagnosed. Patients with hypertension are classified into 3 levels: 1, systolic blood pressure of 140-159 mmHg and (or) diastolic blood pressure of 90-99 mmHg is called grade 1 hypertension; 2, systolic blood pressure of 160-179 mmHg and (or) diastolic blood pressure of 100-109 mmHg is called grade 2 hypertension; 3, systolic blood pressure of 180 mmHg or more and (or) diastolic blood pressure of 110 mmHg above are called grade 3 hypertension. The reason why hypertension is divided into these levels is that the grading criteria of blood pressure are needed while the degree of attention to be paid varies. Grade 3 hypertension should be followed up at all times because it can cause damage to various target organs and patients can develop various complications. For patients with grade 1 hypertension, patients are required to improve their lifestyle and follow up regularly, usually once every three months, and the degree of target organ damage is less than that of grade 3. Therefore, for patients with hypertension, the degree of importance varies after grading, but it is important to know that a person’s blood pressure is not constant and will fluctuate under some stressful conditions. Long-term medication should be taken while improving poor lifestyles and regular follow-ups and follow-ups in order to keep blood pressure under normal control.