Normal adult blood pressure is between 100 and 120 mmHg systolic and between 60 and 80 mmHg diastolic in a quiet state. Blood pressure can change dynamically. Measurement of blood pressure may be affected by the following factors. 1. Higher blood pressure may be measured after exertion or strenuous exercise, and it is more accurate to measure blood pressure after rest. 2. Blood pressure may be higher when you are emotionally excited or nervous, so you need to adjust your mood or relax your blood pressure to be more accurate. 3. Measure blood pressure in a quiet state. In conclusion, the normal value of blood pressure systolic blood pressure is not more than 140mmHg, diastolic blood pressure is not more than 90mmHg, if in a quiet situation, non-same day measurement of three times the value of blood pressure systolic blood pressure are ≥140mmHg and/or diastolic blood pressure are ≥90mmHg can be diagnosed as high blood pressure, should be in the guidance of the doctor to carry out the intervention of life or drugs, and actively control hypertension, to avoid the cause of serious hypertension effects. cardiovascular and renal function.