When measuring blood pressure, it is recommended to measure both sides of the blood pressure, which side of the blood pressure is higher to which side of the blood pressure shall prevail, but it is recommended that the right arm is still mainly. Generally, the blood pressure of the two arms is not exactly the same, the blood pressure of the right arm will be about 10mmHg higher than that of the left arm, because the blood supply of the right arm comes from the right brachial artery, which comes from the main artery of the head and arm, and is the largest branch of the aortic arch. If blood pressure measurement is standardized, it is recommended to measure blood pressure in the right arm; if the right arm is not convenient, you can choose to measure blood pressure in the left arm. Regardless of whether the measurement is on the right side or the left side, the right arm or the left arm and the heart need to be kept in a horizontal position, and the measurement should be carried out in accordance with the regulations. In daily life, if you find high blood pressure or have dizziness, chest tightness and other discomforts, it is recommended to consult a doctor in time to avoid delaying the condition.