To　meet　the　challenges　faced　in　high-fidelity　resonance　self-shielding　calculations,　the　global-local　self-shielding　calculation　method　is　proposed.　The　resonance　self-shielding　and　correlated　effects　are　classified　into　global　and　local　effects.　The　global　effects　are　weak　or　independent　of　energy,　while　the　local　effects　are　strong.　Therefore,　the　resonance　self-shielding　calculation　is　split　into　global,　coupling　and　local　calculations.　Coarse　model　is　built　for　global　calculation　and　the　neutron　current　method　is　employed　to　compute　Dancoff　correction　factors,　where　the　global　effects　are　considered.　The　coupling　calculation　is　based　on　preservation　of　the　Dancoff　correction　factors　and　the　equivalent　1-D　models　of　the　fuel　rods　are　obtained.　The　pseudo-resonant-nuclide　subgroup　method　is　employed　to　perform　the　local　calculation　to　treat　the　local　effects.　This　method　is　realized　in　NECP-X.　The　numerical　results　show　that　the　efficiency　of　this　method　is　increased　by　one　order　of　magnitude　compared　with　the　conventional　method.　Besides,　the　precision　of　infinite　medium　multiplication　factor　is　increased　by　100~300　pcm.　©　2018,　Editorial　Board　of　Journal　of　Nuclear　Power　Engineering.　All　right　reserved.