The normal range of blood pressure for a 23-year-old is 90-139 mmHg systolic and 60-89 mmHg diastolic. blood pressure greater than or equal to 140/90 mmHg is considered hypertension, and blood pressure less than 90/60 mmHg is considered hypotension. When measuring, do not drink alcohol, coffee, tea, smoke, and relax, keep the room temperature appropriate, and measure after 5-10 minutes of quiet rest, so that the measured blood pressure is more accurate. Young people with high blood pressure should look for the cause of hypertension, which may be secondary to acute and chronic glomerulonephritis, acute and chronic pyelonephritis, pheochromocytoma, cortisolism, renal artery stenosis, as well as aortitis, hyperthyroidism and other diseases, which need to be ruled out one by one.