The ideal human blood pressure is less than 120 mmHg systolic and less than 80 mmHg diastolic. If the systolic blood pressure exceeds 140 mmHg and/or the diastolic blood pressure exceeds 90 mmHg when measured three times on non-same day, it is considered as hypertension, and the human blood pressure will gradually increase with age, which should be related to the degree of hardening of blood vessels. Internationally, normal blood pressure values are listed as less than 120 mm Hg systolic and less than 80 mm Hg diastolic, normal high blood pressure is 120 to 139 mm Hg systolic and 80 to 89 mm Hg diastolic, grade 1 hypertension, 140 to 159 mm Hg systolic and 90 to 99 mm Hg diastolic, grade 2 hypertension is 160 to 179 mm Hg systolic and Grade 3 hypertension is systolic blood pressure greater than or equal to 180 mm Hg and diastolic blood pressure greater than or equal to 110 mm Hg. Hypertension is still very harmful to people, especially when it leads to damage to the heart, eyes, brain, kidneys and other important organs, and especially when it leads to the possibility of infarction disease. Therefore, patients with high blood pressure need to actively control and regularly review the changes in blood pressure. The patient should also take a low-salt diet, stabilize mood and ensure sleep quality.