The present invention relates to a piezoelectric vibration element relates to a, in particular an asymmetric I-shape of the elastic body provided with a piezoelectric vibrator and the vibration characteristics are significantly improved panel speaker using the same which are used for the piezoelectric speaker. And the piezoelectric vibrator is a piezoelectric actuator for converting made of an elastic member attached to the piezoelectric material of the electrodes on both sides attached to the piezoelectric material the electric signal into mechanical vibration (piexoelectric actuator), it is attached to one surface of the piezoelectric actuator (piexoelectric actuator) and it configured to include a vibration transmission elastic member for transmitting the mechanical vibration from the piezoelectric actuator to the outside, characterized by having a piezoelectric actuator and the full axial cross-section I of the asymmetric shape of the vibration transmission elastic member. A piezoelectric vibrator according to the invention has a simple structure, can be a manufacturing process simplification, it is possible to generate a high piezoelectric vibration, by controlling the I shape of the asymmetric and can adjust the wavelength having the maximum negative pressure, power consumption compared to the energy can greatly improve the efficiency of reduction in power consumption, it can reduce the signal distortion caused by noise, and miniaturization of the product. In addition, it is possible to obtain a stereo sound effect in one of the panel speakers when attached to two or more piezoelectric transducer according to the invention in a vibration panel. Piezoelectric transducer, piezoelectric speaker, flat panel speaker, stereo speaker