This　paper　concerns　the　initial-boundary　value　problem　for　2D　micropolar　equations　without　angular　viscosity　in　a　smooth　bounded　domain.　It　is　shown　that　such　a　system　admits　a　unique　and　global　strong　solution.　The　main　contribution　of　this　paper　is　to　fully　exploit　the　structure　of　this　system　and　establish　high　order　estimates　via　introducing　an　auxiliary　field　which　is　at　the　energy　level　of　one　order　lower　than　micro-rotation.