[ $Pb(Zr_{0.2}Ti_{0.8})O_3$ ] powders, prepared by the sol-gel method, were mixed with an organic vehicle and the PZT thick films were fabricated by the screen-printing techniques on Pt/alumina substrates. The structural and dielectric properties were examined as a function of sintering temperature. The particle size distribution of the powder is bimodal with the mean particle size of about $1.2;{mu}m$. The average grain size of the PZT thick films sintered above $1000^{circ}C$ was about $3.1;{mu}m$ and the thickness of the specimens was approximately $41;{mu}m$. The relative dielectric constant and dielectric loss of the thick films sintered at $1050^{circ}C$ were 337 and $1.24\%$, respectively.