The piezoelectric ceramic driving power based on constant current source has the advantages of simple structure and good frequency response, but the outstanding shortcoming is that the static power consumption is usually very high. An improved piezoelectric ceramic power based on constant current source is presented in this paper. The dynamic output capability is greatly improved with certain static power consumption, enhancing the competitive ability significantly. A prototype device with an output voltage range of 2.4~300 V is designed. The maximum dynamic output current is 0.44 A when the static constant current is 0.1 A. The driving voltage of a highvoltage driving power based on constant current source is mainly determined by the pressure of the drive tube. In principle, it can be much higher than the existing highvoltage operational amplifier level. Hence, the improved piezoelectric ceramic power has broad prospects in the area of driving highvoltage piezoelectric ceramic.