In　this　study,　an　advanced　magnetoacoustic　compound　inspection　method　for　a　high-order　Lamb　waves　mode　electromagnetic　acoustic　transducer　(EMAT)　was　proposed.　The　proposed　EMAT　can　achieve　the　excitation　and　reception　of　the　A(1)　mode　which　is　the　first-order　Lamb　waves　mode.　According　to　the　characteristics　of　the　A(1)　mode　EMAT　testing　signal,　a　signal　processing　method　for　obtaining　the　pulsed　eddy　current　signal　by　curve　fitting　was　developed　to　extract　the　information　for　the　pulsed　eddy　current.　The　voltage　of　the　ultrasonic　waves　was　carried　on　the　pulsed　eddy　current　voltage,　and　it　was　obtained　by　removing　the　pulsed　eddy　current　voltage　and　extracting　the　time-domain　testing　signal　of　the　A(1)　mode　EMAT.　Through　A(1)　mode　EMAT　single　detection　that　was　used　to　obtain　the　pulsed　eddy　current　and　A(1)　mode,　the　multi-parameter　from　the　magnetoacoustic　compound　testing　signal　of　the　A(1)　mode　EMAT　could　be　used　to　characterize　the　aluminum　plate　performance　degradation.　The　detection　accuracy　of　aluminum　plate　performance　degradation　was　improved　by　the　magnetoacoustic　compound　inspection　compared　with　a　single　detection　method.