Low blood pressure (diastolic blood pressure) of 63mmHg itself is within the normal range, whether it is serious or not needs to depend on the specific value of high blood pressure (systolic blood pressure), if the systolic blood pressure is within the range of 90~140mmHg, then it is normal, otherwise it is not normal. For healthy adults, the normal range of diastolic blood pressure is 60~90mmHg, and the normal range of systolic blood pressure is 90~140mmHg. A diastolic blood pressure of 63mmHg is within the normal range, but it is not necessarily healthy. If the systolic blood pressure is lower than 90mmHg, you need to be vigilant about low blood pressure, if the systolic blood pressure is higher than 140mmHg, you are suspected of hypertension, and you need to improve the blood routine, cardiac ultrasound, ambulatory blood pressure monitoring and other tests to confirm the diagnosis. Once abnormal blood pressure is detected, it is necessary to go to the hospital in a timely manner, according to the doctor’s guidance for timely intervention and treatment.