Systolic blood pressure 99mmHg, diastolic blood pressure 58mmHg according to the blood pressure standard, systolic blood pressure is normal, diastolic blood pressure is slightly low. Blood pressure measurement is generally taken indirectly, the measurement of the person should be within half an hour, no smoking, no coffee, at least 5 minutes to maintain a quiet state, the normal value of systolic blood pressure should be 90~140mmHg, diastolic blood pressure is 60~90mmHg, the patient’s systolic blood pressure of 99mmHg, diastolic blood pressure of 58mmHg, purely from the numerical value of systolic blood pressure is normal, the diastolic blood pressure is slightly lower than the normal range. Blood pressure can fluctuate up and down due to personal constitution, diastolic blood pressure is slightly lower, if it is not accompanied by other symptoms, you can first continue to observe, if accompanied by dizziness, fatigue and other discomforts, you should consult a doctor in a timely manner, under the guidance of the doctor, pay attention to daily rest, avoid excessive exertion.