Non-invasive continuous blood pressure( BP) measurement technology is significant for health care,clinical monitoring and clinical research. For the first time,put forward a new method to measure BP using phase difference of human body 's pulse wave. Introduce relationship between BP and phase difference of radial artery and finger tip,and an experiment is designed to measure phase difference of human body's multi-points pulse wave under different BP,and results show that,phase difference of human's multi-p...