As　the　basic　protocol　of　secure　multi-party　computing,　oblivious　transfer　protocol　can　not　only　construct　other　security　protocols　but　also　play　a　key　role　in　protecting　user　privacy.　With　the　rapid　development　of　quantum　computing,　the　security　of　modern　cryptography　based　on　mathematical　difficulty　problems　is　threatened,　so　further　research　on　quantum　oblivious　transfer　is　of　great　significance.　Most　previous　studies　on　1-out-of-n　quantum　obvious　transfer　protocol　are　based　on　quantum　key　distribution　protocols,　which　encode　and　transmit　secret　messages　by　orthogonal　or　non-orthogonal　quantum　states.　However,　some　measurement　methods　that　can　distinguish　quantum　states　to　a　certain　extent　will　threaten　the　security　of　the　protocols.　This　paper　proposes　a　1-out-of-n　quantum　oblivious　transfer　protocol　based　on　the　entanglement　swapping　between　d-level　cat　state　and　d-level　Bell　state.　This　protocol　does　not　require　the　participation　of　a　third　party　and　completes　the　task　of　oblivious　transfer　by　encoding　secret　information　in　d-level　cat　state.　Its　security　is　based　on　quantum　physical　properties　and　can　resist　eavesdropping　by　external　attackers.　Compared　with　other　protocols,　it　is　more　secure　and　can　provide　perfect　secrecy　defined　in　Shannon＇s　theorem.　It　is　worth　noting　that　in　this　protocol,　the　secret　holder　can　flexibly　balance　the　privacy　protection　requirement　and　quantum　resource　consumption　by　adjusting　parameter　k.