To research the influence of technological parameters, such as mold temperature, melt temperature and compression force, on mechanical property of injection-compression Polycarbonate plate, the injection-compression experiments and tensile experiments of PC plates were conducted by adopting single factor method on the basis of optimized process parameter combinations. The results show that the yield strength of PC specimen decreases with the increasing of mold temperature, but increases with the increasing of melt temperature, compression force and compression speed. The total elongation decreases with the increasing of mold temperature, compression force and compression speed, but increases with the increasing of melt temperature.