The purpose of this research is to analysis on cell morphology of PC (Polycarbonate) foam in different processing parameters. In this study, foamed PC was produced using a dynamic simulation foaming setup designed by ourselves. Cell morphology was compared as different temperatures, pressures, gas saturation time, pressure drop rates and different shear rates were used. Cell morphology of foamed samples was measured by using scanning electron microscopy（SEM）. It was found that foamed samples with better morphology could be obtained as pressure, pressure drop rate and gas saturation time increased.