Guided　wave　array　provides　a　way　to　inspect　large　areas　of　plate-like　structures　quickly　and　has　shown　great　potential　in　the　industry.　The　problems　with　present　methods　to　achieve　this　technology　are　that　purity　mode　transducer　is　difficult　to　produce,　operating　frequency　is　high　(usually　above　200　kHz),　distance　between　transducers　need　to　be　small　and　image　algorithm　can＇t　achieve　the　same　resolution　in　all　directions,　fn　this　paper　the　pancake　coil　EMAT　(Electromagnetic　Acoustic　Transducer)　is　employed　to　produce　purity　A0　mode　in　15　kHz.　A　circular　array　assembled　by　8　EMATs　and　TFM(Total　Focus　Method)　imaging　algorithm　are　used　to　execute　inspection.　The　validity　and　efficiency　of　the　proposed　method　are　demonstrated　experimentally　using　a　3　mm　thickness　aluminum　plate　with　a　27mm　hole　in　the　center.　Results　illustrate　that　the　system　can　inspect　large　plate　with　high　stability　and　imaging　resolution.　The　reason　for　dead　zone　is　studied　and　a　model　to　calculate　it　is　also　established.