Based　on　the　elastic　theory,　dynamics　and　raceway　control　theory　of　the　rolling　bearing,　inner　ring　centrifugal　displacement　of　angular　contact　ball　bearing　was　calculated,　considering　the　influence　of　inner　ring　centrifugal　displacement　the　comprehensive　method　and　its　corresponding　program　were　given　for　calculating　the　contact　stiffness　of　balls　and　inner/outer　raceways　and　radial,　axial,　angular　stiffness　of　the　whole　bearing.　Taking　7012/CD　bearing　as　an　example,　the　results　show　that,　inner　ring　centrifugal　displacement　increases　with　the　increase　of　rotation　speed,　when　rotation　speed　is　high　its　value　is　large　and　cannot　be　neglected;　inner　ring　centrifugal　displacement　has　great　influence　on　inner　contact　stiffness　of　balls　and　bearing　radial　stiffness,　in　consideration　of　this　influence　inner　contact　stiffness　of　balls　and　inner　ring　and　bearing　radial　stiffness　increases　comparatively　and　it　has　little　influence　on　outer　contact　stiffness　of　balls,　axial　stiffness　and　angular　stiffness　of　the　bearing;　inner　ring　centrifugal　displacement　increases　with　the　increase　of　rotation　speed,　its　influence　on　bearing　stiffness　becomes　more　significant.　Therefore,　in　order　to　make　analysis　of　bearing　stiffness　more　accurate　and　close　to　the　factual　condition,　the　influence　of　bearing　inner　ring　centrifugal　displacement　must　be　considered.