【摘要】Thecases choicefortaxauditcontainstwomainaspects:thefirstistodistinguish whetherthetaxpayeristaxevasion ,thesecondistoestimatethequantumoftaxeva sion .Thepapersystematicallyhavestudiedtheestimatingofthequantumoftaxevasion andmadeprogressesandresults.TheauthorfirstappliedtheTobitmodeltoestimate thequantumoftaxevasionandfairlysolvedtheproblemsintheestimationsofthequan tumoftaxevasion .