(Pb0.95Sr0.05)\[(Mn1/3Sb2/3)x(Ni1/2W1/2)y(Zr1/2Ti1/2)z]O3 piezoelectric ceramics ( abbreviated as PNW - PMS - PZT ) are synthesized by traditional ceramics process. The effect of the content of Pb(Mn1/3Sb2/3 )O3( abbreviated as PMS ) and Pb(Ni1/2W1/2)O3 ( abbreviated as PNW ) on phase structure, dielectric and piezoelectric properties at indoor temperature is investigated in detail. The experiment shows that when the phase structures of all the ceramics specimens are of 100% Perovskite structure and εr、 tanδ、kp、 Qm和Tc ( and sintering temperature ) are taken into consideration comprehensively, the obtained ceramics with composition of X＝ 0.06, Y= 0.02, Z= 0.92 can be used for high - power piezoelectric transformer.