In　order　to　suppress　the　spindle　vibration　with　high　efficiency　and　high　precision,　a　no　without　trial　weight　spray　online　balance　method　is　proposed　in　this　paper.　By　analyzing　the　relationship　between　the　unbalanced　excitation　and　the　unbalanced　response　of　the　spindle,　the　relationship　between　the　dynamic　influence　coefficient　and　the　system　model　is　studied.　A　high-speed　spindle　finite　element　analysis　model　was　established,　and　the　dynamic　influence　coefficient　matrix　was　identified.　A　no　trial　weight　spray　online　dynamic　balancing　system　was　developed,　which　has　the　advantages　of　without　trial　weight　and　high-precision　loading.　A　new　type　of　integrated　balancing　terminal　that　was　formed　using　3D　printing　technology　was　first　proposed　by　our　research　group,　and　its　advantages　in　various　aspects　are　significantly　higher　than　traditional　assembly　balanced　terminals.　The　experimental　verification　of　the　without　trial　weight　spray　online　dynamic　balancing　system　was　performed　on　a　high-speed　spindle　test　stand.　Experiments　show　that　the　no　trial　weight　spray　online　balancing　method　proposed　in　this　paper　can　achieve　high-efficiency　and　high-precision　vibration　suppression,　greatly　reducing　balance　time　and　cost　of　the　spindle.　At　the　same　time,　the　online　balance　test　also　verified　the　reliability　of　the　integrated　balanced　terminal.