If the patient’s systolic blood pressure is 100mmHg, the diastolic blood pressure is also low, if it is 50mmHg, this situation is abnormal, belongs to the low blood pressure, it is recommended that the patient must raise the diastolic blood pressure, because the diastolic blood pressure has a direct impact on the perfusion of the heart and the head, if the diastolic blood pressure is too low, the patient may cause myocardial ischemia and the cerebral arterial supply of insufficient performance, the optimal range of the diastolic blood pressure is 65-80mmHg. The optimal diastolic blood pressure range is 65-80 mmHg. If the patient is currently taking antihypertensive medication, it is best to reduce the dose or stop taking the medication. Because sometimes a higher blood pressure is more harmful than a lower blood pressure, it is not recommended to lower the patient’s blood pressure too low, or even cause the patient to develop hypotension, which is unsafe. If the patient’s natural blood pressure is so low, you can not need to treat first, pay attention to observation can be.