The　paper　investigates　the　role　of　radial　load　and　rotating　speed　on　the　high　frequency　vibration　of　a　deep　groove　ball　bearing.　Firstly,　a　bearing　dynamic　model　with　6-DOF　balls　was　established,　considering　the　interactions　between　balls,　races　and　the　cage.　The　dynamic　model　was　solved　by　fourth　order　varying　steps　Runge-Kutta　integration.　The　frequency　spectrums　of　dynamic　response　of　races　were　analyzed　with　yule-walker　and　FFT.　Secondly,　a　verification　experiment　was　done　with　different　radial　loads　and　speeds.　Finally,　compared　with　the　numerical　and　experimental　results,　the　similar　trend　of　the　high　frequency　vibration　was　emerged.　Higher　vibration　frequencies　result　with　increasing　bearing　load;　higher　vibration　amplitude　cause　by　more　quickly　rotating　speed.　That　is　because　the　nature　frequencies　of　the　races　are　excited　by　the　contact　and　shock　between　balls　and　races　when　balls　leave　from　the　non-load　to　the　load　zone.　The　frequency　spectrums　were　also　affected　by　the　interaction　between　the　balls　and　cage.