In　the　actual　industrial　production,　the　collected　vibration　signal　often　contains　accidental　impact　or　harmonic　interference　due　to　the　influence　of　mechanical　vibration　or　human　interference.　However,　the　current　popular　Fast　Kurtogram　(FK)　method　cannot　accurately　extract　the　frequency　band　with　more　fault　information　when　processing　the　signal　with　such　two-type　interference.　Therefore,　this　paper　proposes　a　robust　method　called　Enfigram　to　improve　the　drawback.　In　Enfigram　method,　a　new　statistical　index　is　designed　to　select　the　optimal　modulation　frequency-band.　Envelope　Fourier　index　(Enfi)　uses　two　Fourier　transforms　to　transfer　the　interference　of　accidental　pulse　in　the　signal　envelope　to　the　origin,　so　that　accidental　pulse　can　be　eliminated　by　low-pass　filtering.　Moreover,　the　frequency-band　segmentation　method　based　on　spectrum　trend　can　adaptively　divide　the　fault　information　into　a　frequency　band　in　Enfigram,　which　ensures　the　integrity　of　fault　information.　Compared　with　FK,　Infogram　and　other　methods,　the　result　shows　that　Enfigram　has　better　performance.　(c)　2021　Elsevier　Ltd.　All　rights　reserved.