Abstract: Withthefurtherofstudyofthemultipactor,effectsoflowenergyelectronshadbecomemoreand moreimportant.Inordertosimulateandanalyzemultipactortheoryaccurately,onthebasisofresear chforsecondaryandbackscatteredelectronemissionmodel,anewmodelwasputforwardbased onsecondaryelectronyield(SEY),backscatteredelectronyield（BEY） andtheangleofelectronincidence.ConsideringthedifferenceofSEY,BEYoflowenergyelectron,a ndcompactingseveralsecondaryand backscatteredelectronyieldformulae,thenewmodelformultipact orhadabetterprecisionandapplicability.Finally,somediscussionandanalysiswasdoneforimprovingthecorrectnessandbroadeningthe applicationofthemodel.

Key words: multipactor, lowenergyelectron, secondaryelectronemissionmodel, backscatteredelectron, theangleofincidence