To　predict　the　grinding　chatter,　a　prediction　method　of　grinding　chatter　based　on　Shawkart　control　chart　is　proposed.　To　predict　the　grinding　chatter　quickly　and　accurately,　this　method　draws　the　control　chart　of　chatter　sensing　signal　feature　based　on　“Kσ”　principle　of　statistical　quality　control　to　monitor　the　unstable　signal　component.　First,　according　to　the　chatter　signal＇s　spectral　analysis　of　grinding　process,　the　sensitive　frequency　band　of　chatter　was　obtained.　The　percentage　of　the　sensitive　frequency　band　energy　accounted　for　the　entire　analyzed　band　energy　was　regarded　as　chatter　characteristic　value.　Then,　the　chatter　characteristic　values　of　stable　grinding　process　vibration　signals　were　treated　as　statistical　characteristic　values　to　draw　control　chart.　By　calculating　mean　and　variance　of　the　statistical　characteristic　values,　the　upper　and　lower　control　limits　of　control　chart　were　calculated.　Finally,　the　rules　of　control　chart　were　used　to　distinguish　whether　the　abnormal　fluctuation　of　statistical　characteristic　values　occurred.　In　this　way,　the　chatter　was　predicted.　Experimental　results　show　that　the　prediction　method　of　grinding　chatter　based　on　control　chart　can　predict　the　occurrence　of　chatter　accurately.　©,　2015,　Beijing　University　of　Technology.　All　right　reserved.