Systolic blood pressure (informal term: upper pressure) 90mmHg, diastolic blood pressure (informal term: lower pressure) 60mmHg if no discomfort is generally not dangerous, but if there is a history of dizziness, blurred vision or even fainting, then we need to consider whether there is postural hypotension, there may be a risk of trauma due to fainting. Ideal blood pressure for adults is 90~119/60~79mmHg, systolic blood pressure of 90mmHg, diastolic blood pressure of 60mmHg belongs to the lower limit of ideal blood pressure, if the examinee does not have dizziness, blurring of vision and other discomforts, there is generally no danger. If the subject is lying down for 5 minutes and then stands up for 1 minute and 5 minutes to measure the blood pressure and find that the systolic blood pressure drops by more than 20mmHg, accompanied by dizziness or fainting, then it is postural hypotension, and the patient may be at risk because of falling or bumping due to fainting during the attack of hypotension. If the examinee has dizziness, blurred vision, etc., it is recommended to actively seek medical treatment and standardize the treatment.