The correct operation of measuring blood pressure at home by oneself includes making good preparation before measurement and producing accurate results through correct measurement operation. 1. Preparation before measurement: Before measuring blood pressure, the examinee should avoid drinking strong tea, coffee and other ingredients that may cause nervous excitement. At the same time, avoid strenuous exercise, emotional excitement and other conditions, and try to maintain a stable state of mind and physiological signs before the measurement. 2. Measurement operation: When measuring blood pressure, try to choose a sitting position, so that the examined arm is at the same level with the heart. At the same time, the cuff should be placed on the elbow of the upper arm as accurately as possible, so that the cuff is at the same level with the heart, which can increase the accuracy of the results. Since there is a large fluctuation in the results of the self-service blood pressure meter, it is recommended to repeat the measurement several times if you want to measure your blood pressure accurately. It is recommended that you can learn the correct operation to minimize the error before measuring blood pressure on your own.