Monitoring blood pressure with a smart bracelet is not recommended, and its accuracy is subject to error, so monitoring blood pressure with a smart bracelet is not particularly accurate in the opinion of a physician. It is recommended that if patients want to measure their blood pressure, they should still apply a mercury column sphygmomanometer or a calibrated electronic sphygmomanometer, which is recommended by non-medical personnel because calibrated electronic sphygmomanometers and mercury column sphygmomanometers, for example, are very similar to measure blood pressure and are easier to operate. When monitoring blood pressure patients should pay attention to the time period, mental state and any other recent activities, rest quietly for more than 5 minutes when measuring blood pressure, take a flat or sitting position to measure blood pressure, and do not talk loudly during the measurement.