Smart wristband is a kind of functional wristband with scientific content, which is different from traditional wristband. From 20 13 and 20 14, the popularity of smart bracelets rose immediately, and manufacturers all over the world rushed to seize this market. Therefore, there are various brands of smart wristbands with various functions on the market. For example, there are pedometers, alarm clocks, sleep monitoring, health management, anti-lost positioning and other functions. Only one hand strap is needed to detect the required data. Generally, there is a display screen to display data, which has strong endurance, and then the data is statistically observed through the mobile APP, and the settings are made in real time and quickly. However, the various types are uneven, the technology is not mature enough, and some data are inaccurate, which leads to the development of this market taking some time.