The complex perovskite compound Ba(Mg
1/3Nb
2/3)O
3(BMN), Ba(Zn
1/3Nb
2/3)O
3(BZN) are prepared by solid-state reaction.Doped into industrial BaTiO
3, they can improve the loss quality.Results obtained here confirm that the ceramics about 90% of the theoreical density is achieved after sintering at 1 300-1 400℃.Dieletrics resonator measurements show that dielectric loss extremal reducement corresponds with frequencies increasing from 1 kHz to 1 000 kHz.