Needle　selector　is　an　executive　component　of　computerized　flat　knitting　machine　used　to　implement　needle　selection　control.　It　is　found　that　there　are　problems　of　missed　and　wrong　selection　in　the　actual　working　process.　In　this　paper,　a　novel　single-stage　electromagnetic　needle　selector　with　E-type　structure　was　designed　by　using　ANSYS　Maxwell.　And　PWM　control　technology　was　applied　to　the　excitation　driving　circuit　of　this　needle　selector.　The　analysis　and　experiment　show　that　the　new　needle　selector　can　effectively　reduce　the　occurrence　of　wrong　and　missed　needle　selection,　and　also　save　the　material　cost.　This　research　can　provide　theoretical　guidance　for　the　improvement　of　the　product　process　and　driving　module　of　the　needle　selector,　and　better　practical　application　value.　©　2021　IEEE.