Smart bracelets are generally inaccurate in measuring blood pressure. Although smart bracelets are an emerging technology, they do not have the expertise and authority to measure blood pressure, as clearly stated in the cardiology clinical guidelines. In today’s clinic, the more accurate way to measure blood pressure is still the cuff mercury sphygmomanometer, electronic sphygmomanometer is more convenient, can be home to monitor blood pressure. Some healthy young people use smart bracelets to measure blood pressure because of novelty, which is not harmful to the body, but for some people with serious diseases who need to measure blood pressure accurately, it is recommended to use mercury sphygmomanometers or electronic sphygmomanometers to measure blood pressure, which can provide assistance to doctors in formulating diagnostic and treatment plans.