It　is　a　difficult　and　challenging　subject　for　ultrasonic　inspection　to　test　and　evaluate　the　debonding　interface　of　adhesive　structure.　Assuming,　the　debonding　interface　layer　to　be　a　fluid　thin　layer,　the　acoustic　reflection　and　transmission　coefficient　expressions　were　derived　based　on　the　transfer　matrix　method　for　the　body　waves　striking　debonding　structure　with　fluid-solid　(gas-solid　and　liquid-solid)　coupling　interfaces.　Firstly,　this　method　was　applied　to　a　two-layered　structure　and　the　correctness　of　the　method　was　verified　by　comparing　with　the　existing　results.　Then,　the　influences　of　the　incident　angle　and　frequency　changes　of　the　acoustic　wave　on　the　body　wave　propagation　characteristics　were　analyzed　for　adhesive　structure　with　rigid　interfaces　and　debonding　structure　with　fluid-solid　coupling　interfaces.　The　results　show　that　the　propagation　modes　of　the　body　waves　in　the　multilayered　structure　mainly　dependent　on　the　incident　angle,　frequency　and　other　parameters.　The　rigid　interfaces,　gas-solid　and　liquid-solid　coupling　interfaces　can　be　distinguished　in　the　case　of　the　incident　angle　and　frequency　of　the　acoustic　wave　are　appropriate.　The　research　results　provide　a　theoretical　reference　for　identifying　the　adhesive　interface　debonding　with　ultrasonic　spectrum　technique.　©　2017,　Editorial　Department　of　Transaction　of　Beijing　Institute　of　Technology.　All　right　reserved.