Limited　number　of　trial　runs　in　field　are　unable　to　provide　enough　characteristic　response　parameters　for　the　holobalancing　method.　A　new　unified　holobalancing　method　is　presented.　With　simplified　assumption　made　for　the　modal　trial　mass　ratio　and　the　linear　response　characteristic　of　the　holobalancing　technique,　the　transfer　matrix　corresponding　to　a　certain　correction　plane　then　is　extended　to　the　trial　set　transfer　matrix,　which　is　related　to　a　certain　order　of　modal　trial　mass　set.　The　number　of　trial　runs　necessary　for　the　balancing　operation　is　reduced　and　the　balancing　efficiency　is　improved.　The　feasibility　and　effectiveness　of　this　method　have　been　confirmed　according　to　the　analytical　result　of　a　real　balancing　procedure　of　a　300　MW　turbine　generator　set.