Under normal circumstances, ideal blood pressure is systolic blood pressure <120mmHg and diastolic blood pressure <80mmHg. Normal blood pressure is 90mmHg Normal blood pressure is the prerequisite for blood circulation. Blood pressure remains normal under the regulation of a variety of factors, thereby providing sufficient blood volume for various tissues and organs to maintain normal metabolism. Too low or too high blood pressure will cause serious consequences, and the disappearance of blood pressure is a precursor to death. This shows that blood pressure has extremely important biological significance. Hypertension refers to an abnormal increase in arterial blood pressure above the normal value, that is, systolic blood pressure ≥140mmHg or diastolic blood pressure ≥90mmHg. Hypotension refers to an abnormal decrease in arterial blood pressure below the normal value, that is, systolic blood pressure ≤ 90mmHg or diastolic blood pressure ≤60mmHg. /iknow-pic.cdn.bcebos.com/77c6a7efce1b9d168c99a130fcdeb48f8c546400"target="_blank"title=""class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/77c6a7efce1b9d168c99a130 fcdeb48f8c546400?x- bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="/n2/2017/0628/c371273-30391499.html"target="_blank"title="People's Daily Online -What is the normal blood pressure for Chinese people? What are the misunderstandings about the treatment of hypertension? "> People's Daily - What is the normal blood pressure for Chinese people? What are the misunderstandings about hypertension treatment? /m.people.cn/n4/2019/1009/c34-13263961.html"target="_blank"title="People's Daily Online - Play the "Trilogy" to Control Hypertension">People Net-Play the "trilogy" to control high blood pressure