There are two main types of blood pressure measurement devices on the market: one is the mercury sphygmomanometer and the other is the electronic sphygmomanometer. In the clinic has been gradually replaced by electronic sphygmomanometers, because electronic sphygmomanometers are relatively easy to operate, and can quickly measure blood pressure and pulse rate. The price of electronic sphygmomanometers range from about 100 yuan to thousands of dollars, different brands, relatively speaking, there will be great differences in price, most electronic sphygmomanometers are priced at about 200-300 yuan, you can buy a pretty good electronic sphygmomanometer. And mercury blood pressure monitor price is about 100 yuan, is the most traditional blood pressure monitor, especially the elderly patients, if you use this blood pressure monitor measurement, it is easy to inaccurate measurement of this situation.