The right arm should be used to measure blood pressure. Because the right arm, the location of the heart is farther away from the heart, can reduce the impact of the heart beat on the blood pressure, reduce the error of measuring blood pressure, general normal blood pressure is about 120/80mmHg, if the blood pressure is too high or too low are not normal. Normally when measuring blood pressure, it is best to sit in a sitting position, so that the elbow, the heart, the sphygmomanometer as far as possible to keep at the same level, can reduce the error of measurement. If the blood pressure increases, it must be timely oral antihypertensive drugs, such as valsartan, amlodipine tablets, felodipine extended-release tablets, etc., to reduce the chances of acute cardiovascular and cerebrovascular complications. Reduce the adverse consequences of dizziness, headache, sweating, fatigue and even shock caused by abnormal blood pressure.