This　paper　proposes　a　pulse　voltage　source　based　on　MOSFET　for　the　electro-optical　switch.　The　voltage　regulation　stage　is　composed　of　two-stage　de/de　converter,　including　a　buck　and　a　voltage　multiplier.　The　pulse　voltage　generator　is　based　on　the　series-connected　MOSFETs.　The　principle　of　the　electro-optical　switch　drive　is　analyzed　and　the　parameters　design　method　is　also　presented.　An　experimental　prototype　was　built　to　verify　the　effectiveness　of　the　proposed　design　method.