In　this　paper,　finite　element　models　of　a　hydrostatic　oil　film-turntable　system　are　established　based　on　the　actual　working　conditions　to　revolve　smoothly　and　steadily,　and　decrease　vibration.　Modal　analysis　of　the　system　is　executed　to　study　the　system　parameters＇　influences　between　the　vibrational　frequencies.　By　using　response　surface　methodology,　explicit　function　on　the　vibrational　frequencies　and　the　system　parameters　is　obtained.　Numerical　results　show　that　material　elastic　modulus　and　stiffness　of　oil-film　combined　with　chamber　numbers　have　effect　on　the　frequencies　of　the　system.　Material　elastic　modulus　has　less　impact　on　the　lower　order　vibration　frequencies,　and　significantly　affects　the　higher　order　vibration　frequencies.　The　stiffness　of　oil-film　has　increasingly　influence　on　lower　order　vibration　frequencies　with　the　increase　of　the　number　of　chambers.