简介:Inthispaper,weaimatdynamicalbehaviorsofastochasticSISepidemicmodelwithdoubleepidemichypothesis.Sufficientconditionsfortheextinctionandpersistenceinmeanarederivedviaconstructingsuitablefunctions.WeobtainathresholdofstochasticSISepidemicmodel,whichdetermineshowthediseasesspreadwhenthewhitenoisesaresmall.Numericalsimulationsareusedtoillustratetheefficiencyofthemainresultsofthisarticle.