Plasma-electrode Pockels cells (PEPC) are used in large high-power laser driver for inertial confinement fusion (ICF) to restrain the self-oscillation produced by the multipass amplifier and isolate the back beams. With parallel driving technology, the miniaturization and low cost of Pockels cells driver can be realized. In this paper, the approaches and issues of parallel drive for PEPC electro-optical switches are described. The parallel drive electro-optical switches include the parallel driving of plasma discharge and switching crystal charge. With the isolate resistance and decouple diode, the pre-ionization of two Pockels cells are parallel driven successfully. Moreover the plasma electrodes of two Pockels cells are accuracy synchronously taken place. By adjusting the forming line of switch pulses and transmission cable length, the parallel charge of Pockels cells can also be achieved. And the experimental results are given in the end.