Cells of polymer-stabilized cholesteric texture (PSCT) were fabricated with various polymer concentrations. The structure of the polymer network and the electro-optical characteristics of the devices were studied. The result clearly demonstrates the polymer stabilization effect on the liquid crystal domains in the cells. In addition, the hysteresis characteristics and the dielectric properties of the cells were studied as a function of the driving frequency. The results lead to the conclusion that the polymer enhanced hysteresis effect in PSCT cells is mainly caused by the aligning effect of the polymer network.