Wrist sphygmomanometers are generally more accurate, but only if they are qualified products produced by regular manufacturers. There are various types of sphygmomanometers, such as the traditional vertical mercury sphygmomanometer, which needs to measure the blood pressure of the brachial artery; there are also upper arm electronic sphygmomanometers, wrist sphygmomanometers (electronic) and so on. Generally speaking, as long as the qualified products produced by regular manufacturers, the measured blood pressure is relatively accurate. Moreover, electronic blood pressure monitors such as arm-type electronic sphygmomanometers and wrist-type sphygmomanometers (electronic) have the advantages of convenient measurement and can be used by ordinary people compared with the traditional vertical mercury sphygmomanometers. However, it is important to pay attention to the measurement method and the timing of the measurement to determine whether the measurement result is a true feedback of the health condition of the body. When using a wrist sphygmomanometer, it is recommended that the wrist and heart be at the same level. The person to be measured can sit on a chair with a backrest, sit quietly for at least 10 minutes, keep the mood and body relaxed, and the wrist strap should not be too loose or too tight. Measurements can be taken on three consecutive days to provide a more accurate picture of the body’s blood pressure. Do not measure blood pressure when you are emotionally excited, after strenuous exercise, or after drinking alcohol or coffee, as this can lead to unstable blood pressure and does not reflect the true state of the body’s blood pressure. If abnormal blood pressure is found during home blood pressure measurement, it is recommended to consult a doctor in time to confirm the existence of abnormal blood pressure and follow the doctor’s instructions to intervene in the treatment.