Whether blood pressure of 90/60 mmHg is normal needs to be determined by the situation, as follows: 1. Patients with usual blood pressure of 130/85 mmHg, suddenly dropping to 90/60 mmHg between, along with symptoms, is an abnormal situation, which may cause malignant arrhythmias, such as rapid atrial fibrillation or supraventricular tachycardia, further leading to hemodynamic disorders, a drop in blood pressure, and the need for treatment; 2. Young student, such as a female patient in her 20s with a blood pressure of 90/60 mmHg without any other symptoms, the blood pressure is within the normal range. Therefore, it is generally not possible to judge a patient’s high or low blood pressure simply by the 90/60 mmHg of blood pressure, but needs to vary from person to person.