In　order　to　implement　the　test　method　to　detect　winding　deformation　excited　by　pseudorandom　binary　M-Sequences　(The　M-Sequence　method),　a　detecting　instrument　for　winding　deformation　synthetically　based　on　the　M-Sequence　method　and　Frequency　Response　Analysis　(FRA)　is　developed.　Three　kinds　of　the　artificial　failures　aimed　to　simulate　winding　deformation　were　set　in　a　pie-type　winding.　Comparative　experiments　between　the　M-Sequence　method　and　FRA　were　carried　out,　and　the　results　show　that　frequency　response　and　statistical　characteristics　of　the　M-Sequence　method　are　consistent　with　those　of　FRA　in　the　common　frequency　band,　which　proves　that　the　two　methods　have　the　same　accuracy　in　terms　of　frequency　response.　Transfer　function　coefficients　obtained　by　the　M-Sequence　method　as　well　as　changes　in　the　map　of　the　poles　and/or　zeros　can　also　indicate　winding　deformation.　The　experiments　confirm　that　the　M-Sequence　method　is　a　feasible　approach　for　identifying　winding　deformation.　Moreover,　the　on-site　experiment　shows　that　frequency　responses　obtained　through　the　two　methods　are　coincident　in　the　common　frequency　band,　while　differences　exist　between　the　poles/zeros　obtained　by　transfer　function　and　peaks/troughs　in　the　frequency　response　curve　obtained　by　FRA.　The　presented　study　of　this　new　method　demonstrates　that　it　has　some　advantages　over　FRA　and　lays　the　foundation　for　further　practical　applications.