In order to fabricate 8YSZ thick film by silk screen printing, YSZ(yttria-stabilized zirconia) commercial powder was used as starting materials. Paste for screen printing was made by mixing 8YSZ powder and organic vehicles. 8YSZ thick film was formed on $Al_2O_3$ substrate. The crystal structure, and microstructure were investigated. Grain size of 8YSZ was increased with increasing calcination temperature and rapid grain growth was shown after calcination at $1300^{circ}C$. Microstructure showed the mixture of large and small grain size after $1400^{circ}C$ sintering. Shrinkage rate of 8YSZ thick film sintered at $1400^{circ}C$ was more than 40%.