Low pressure refers to diastolic pressure, high pressure refers to systolic pressure, normal human blood pressure measurement has 2 values: 1, systolic pressure. 2, diastolic pressure, if the systolic or diastolic pressure is high, it is hypertension. The range of blood pressure in normal people is between 90-139mmHg systolic and 60-89mmHg diastolic. Patients with grade 1 hypertension should first undergo lifestyle interventions to control their blood pressure, mainly a low-salt, low-fat diet, control of sodium intake, appropriate physical exercise, and cessation of smoking and alcohol. Patients with grade 2 and 3 hypertension need to use antihypertensive medications to lower their blood pressure.