Earthquake induced soil liquefaction result in damage of liquefiable ground. Ground failure triggered by liquefaction leads to significant changes in soil properties. For liquefiable soil, it is crucial to characterize variation of dynamic properties during centrifuge test, which remains challenging due to numerous interferences in geotechnical centrifuge. In this paper, low-cost piezoelectric bender element and extender element have been developed for characterization of liquefiable soil in centrifuge test. A series of indoor tests and centrifuge tests are used to verify the validity and reliability of piezoelectric element. The bender element and extender element are reliable under different gravity levels and different vibration frequencies.The influence factors of signal strength are then discussed.