The change of the stress on rock leads to the variation of the wave passing through, which constitutes the base for the detection of the medium nature and the state of stress with elastic waves. It is significant for the development of the technology of monitoring stress to research the elastic wave parameter and its analytical method. The authors conducted a laboratory experiment, in which respective untrasonic were excited to pass through the marble and then received by a three-component sensor, aiming to make full use of the wave to study the variation of Rayleigh wave polarization and velocity of different seismic phases with the state of stress. It was found that: 1) the stress sensitivity of different seismic phase velocity is 10E-8/Pa, with a descending order: Rayleigh wave>S wave>P wave; 2) the larger the stress, the more intense the Rayleigh polarization, and the change is nonlinear; and 3) the stress sensitivity of Rayleigh polarization is times greater than wave velocity.
