We　provide　three-dimensional　numerical　simulations　of　mixing　performance　in　a　newly　proposed　micromixer　with　different　structural　parameters.　The　same　amount　of　gaps　and　baffles　are　arranged　along　the　curved　channel　within　a　certain　distance.　The　effects　of　their　structural　parameters　on　mixing　efficiency　are　presented,　which　include　either　the　position　and　feature　size　of　gaps　and　baffles,　or　the　curvature　radius　of　curved　channel.　The　high　efficiency　mixing　mechanism　of　the　curved　channel　with　gaps　and　baffles　can　attribute　to　the　interaction　of　the　increased　contact　area　for　premixed　liquids,　the　jet　and　throttling　effect　over　every　unit　of　gap　and　baffle,　the　developing　of　the　multidirectional　vortices　along　the　curved　channel.　The　mixing　index　is　sensitive　to　the　width　of　the　gaps　and　baffles　for　some　Reynolds　number　ranges,　but　is　not　sensitive　to　the　curvature　radius　of　the　curved　channel.　The　characteristic　of　the　pressure　drop　depending　on　Reynolds　number　is　also　investigated　in　order　to　keep　an　appropriate　balance　with　mixing　property.