Pulse wave characteristics are closely related to cardiovascular disease, and the choices of detection method and sensor even have significant impacts on the test results. There are three types of sensors for detecting noninvasively pulse wave, pressure sensors, piezoelectric sensors and photoelectric sensors (reflection type and transmission type). The pulse wave signals are usually obtained by radial artery pressure pulse waves or finger tip volume pulse waves. The practical application proves every kind of sensor has a certain performance indicators and adaptability area, and testing approach also impacts on the wave signals. Although both piezoelectric sensors and photoelectric sensors can capture these waves with good wave signals,  the pressure sensors are gradually being eliminated due to some disadvantages such as large errors , strong noise and sensor location limited. In addition, clinical trials also confirm that the radialis arteriae pressure waves are vulnerable to sensor location and testing individual. and the finger tip volume pulse waves are easily caught with stability and reproducibity.