1. A driving apparatus of a plasma display panel, comprising: a peak detector for detecting common non-emitted sub-fields through picture signal data having the maximum level of the gray scale of all input picture signal data within one frame and transmitting information of the non-emitted sub-fields; a sub-field generator for dividing sub-fields having higher weights into a plurality of sub-fields having lower weights and rearranging the plurality of sub-fields having lower weights as sub-fields for expression of gray scale when the non-emitted sub-fields are detected by the peak detector; and a sustain number generator for generating the number of sub-fields corresponding to the plurality of sub-fields rearranged when the non-emitted sub-fields are detected by the peak detector.