With　the　development　of　force　metrology　within　super-large　range,force　transfer　system　with　a　super-large　range　has　become　a　hotspot　in　the　field　of　force　metrology　recent　years.　An　uncertainty　calculation　model　of　the　build-up　system　with　a　super-large　rangeconsidering　the　influence　of　the　build-up　structure　was　developed.　A　60　MN　build-up　system　was　calibrated　and　its　uncertainty　was　evaluated　and　verified.　The　researchresultsshow　that　the　deformation　of　the　build-up　structure　would　induce　indication　error　in　the　build-up　system.　The　uncertainty　component　induced　by　the　indication　error　is　larger　than　that　induced　by　the　force　transducer,whichis　the　main　component　in　the　combined　uncertainty　of　build-up　system　with　a　super-large　range.　In　the　evaluation,　the　influence　of　this　component　should　be　fully　considered;　when　extrapolating　the　indication　error　and　its　uncertainty　to　full　range,　the　power　function　should　be　used　to　perform　the　curve　fitting　and　extrapolation　of　the　build-up　system　indication　error　and　its　uncertainty,　which　will　guarantee　thatthe　extrapolation　results　are　accurate　and　reliable.　©　2019,　Science　Press.　All　right　reserved.