Cerenkov　emission　during　electron　radiotherapy　had　been　emerging　as　a　new　dose　assessment　approach　for　clinical　radiotherapy　and　could　be　imaged　through　a　standard　commercial　camera.　The　purpose　of　this　work　aimed　to　study　the　accuracy　of　corrected　Cerenkov　emission　method　during　electron　radiotherapy　by　Monte　Carlo　(MC)　method.　GAMOS　MC　software　was　used　to　model　the　physics　of　electron　therapy　and　calculated　dose　and　Cerenkov　photon　distribution　in　water　phantom.　Compared　to　ionization　chamber　and　diode　measurement,　MC　simulated　dose　discrepancy　was　less　than　1%　in　percentage　depth　dose　(PDD)　curves　and　less　than.　2%　in　crossline　profile　curves,　which　was　acceptable　for　clinical　criterion.　Compared　to　ionization　chamber　dose　measurement,　MC　simulated　Cerenkov　discrepancy　was　less　than　2%　in　crossline　profile　distribution,　which　was　acceptable　for　clinical　criterion.　However,　the　Cerenkov　PDD　curves　tended　to　overestimate　the　dose　at　the　build-up　region　and　underestimate　the　dose　at　the　remaining　attenuation　region.　After　increasing　the　Cerenkov　distribution　depth　to　2-3 mm,　the　discrepancy　became　well　within　1%　at　the　remaining　attenuation　region,　which　was　acceptable　for　clinical　criterion.　Therefore,　corrected　Cerenkov　emission　could　be　used　to　assess　PDD　accuracy　and　crossline　profile　accuracy　during　electron　radiotherapy.