Environment-fr iendly mercury-free sphygmomanometer is for the human body as long as the function of blood pressure measurement used, which is characterized by liquid crystal column and LCD-screen display instead of the mercury column displays the pressure values. Just gently push LCD display products, we can then effectively adjust within the 0-90 degree viewing angle LCD screen to adapt to the observation the observer perspective, and effectively improve the accuracy of blood pressure observed with a simple structure , visual angle easy to adjust, and high precision. Micro-processor automatically by the pressure of dressing the best indication accuracy. Realize the non-mercury sphygmomanometer and safe treatment to effectively protect the health and the prevention of environmental pollution,and comply with environmental requirements. The product with independent intellectual property rights, won the national utility model patent, provincial high-tech products and so on.