In　the　previous　study,　a　non-iterative　equivalence　method　is　proposed,　which　guarantees　that　the　reaction　rates　calculated　by　subgroup　method　in　self-shielding　calculation　are　preserved　in　subgroup-collapsed　one-group　calculation.　This　method　shows　advantage　in　efficiency　over　the　Super-Homogenization　(SPH)　method.　However,　one-group　fixed-source　calculations　are　still　needed　for　obtaining　multi-group　(MG)　equivalence　parameters.　In　this　paper,　a　one-dimensional　model　is　employed　for　obtaining　the　MG　equivalence　parameters　in　subgroup　method.　Based　on　the　one-dimensional　model,　the　one-group　fixed-source　calculation　is　simplified　to　one-angle　tracking　sweeping,　which　is　time-saving.　The　numerical　results　show　that　the　reaction　rates　can　be　preserved　with　the　MG　equivalence　parameters　obtained　based　on　the　one-dimensional　model　for　pin　cell　problems.　For　fuel　assembly　problems,　the　kinfis　improved　by　140　pcm　~　187　pcm　with　negligible　increase　in　computational　time.　(C)　2022　Elsevier　Ltd.　All　rights　reserved.