This　paper　presents　a　prototyping　verification　methodology　of　SoC,　and　implements　the　prototyping　verification　of　LEON3　SoC.　First,　it　builds　the　FPGA　prototyping　hardware　platform,　completes　transplanting　an　ASIC　into　a　FPGA　platform,　finishes　simulation　of　FPGA　version,　then　does　a　prototyping　verification　through　two　verification　methods　of　a　single　IP　and　the　whole　system　and　ultimately　implants　a　Linux　operating　system　and　mini　GUI,　makes　the　LEON3　SoC　realize　hardware　and　software　co-verification　in　the　prototyping　verification　platform.