Systolic blood pressure of more than 100 mmHg, diastolic blood pressure of more than 70 mmHg of clinical manifestations can not determine the severity of the disease, the blood pressure value in the human body’s normal blood pressure range, the blood pressure of this data point of view is not obvious abnormality, but based on the value of the blood pressure can not be the severity of the disease. Blood pressure refers to the side pressure of blood flow in the blood vessel when acting on the wall of the unit area of the blood vessel. Normal blood pressure ranges from 90 to 140 mmHg systolic and 60 to 90 mmHg diastolic. Blood pressure is one of the four major vital signs, which can determine the heart function and peripheral vascular resistance, and is also an important element in diagnosing diseases, observing changes in the condition and judging the effectiveness of treatment. The severity of the disease cannot be determined by blood pressure alone, and the severity of the disease should be evaluated under the guidance of a doctor.