In this study, the synthesis of PZT powder by bubble column reactor was investigated at various reaction conditions. As a result, the volume % of $NH_3$ gas used as a precipitator had no effect on the synthesis, but the more research is needed to control particle size.As a carrier gas, Ar, $O_2$ and air only increased the stirring effect but had no effect chemically on the synthesis. The calcination temperature of prepared PZT powder was about $500-600^{circ}C$ and the meanparticle size of synthesized PZT powder was about $0.17{mu}m$. The grain size of sintered body is about $0.5~3{mu}m$ and this is similar with the value of commercial products.