The principal problems in development of dielectric paste materials for PDP(plasma display panel)are PbO free paste and low melting temperature. We prepared PbO free paste from glasses in the system ZnO-B2O3-Bi2O3-SiO2, DTA, and XRD were used to characterize ZnO-B2O3-Bi2O3-SiO2 glasses. In this present study, PbO free paste had thermal expansion of 74×10(-7)/℃, DTA transformation point of 470℃, and firing condition of 540℃, 20min.