To　further　improve　the　performance　of　the　LED　and　seek　a　better　electrode　structure　of　LED,　this　paper　designs　and　prepares　a　variety　of　devices　with　different　electrode　window　sizes　and　spacings　based　on　the　P/N　electrode　discontinuous　ohmic　contact　LED.　By　comparing　the　influence　of　different　electrode　window　sizes　and　spacings　on　the　photoelectric　performance　of　LED　under　5-500mA　driving　current,　the　best　performance　electrode　window　size　and　spacing　are　obtained.　The　test　results　in　this　paper　show　that　when　the　N　electrode　window　spacing　is　reduced　from　45μm　to　37μm,　the　device　voltage　decreases,　and　the　spectral　area　increases.　When　the　size　of　the　N　electrode　window　is　reduced　from　5μm×17μm　to　5μm×10μm,　although　the　voltage　of　the　device　has　increased,　the　luminous　efficiency　under　the　rated　current　of　150mA　is　increased　by　4.9%.　When　the　distance　between　the　P　electrode　windows　is　increased　from　20μm　to　30μm,　the　voltage　of　the　device　will　increase,　but　the　luminous　efficiency　under　the　test　current　of　150mA　is　increased　by　7.2%.　Although　the　size　of　the　P　electrode　window　has　little　effect　on　the　light-emitting　performance　of　the　device,　increasing　the　size　of　the　P　electrode　window　to　a　certain　extent　can　improve　the　electrical　characteristics　of　the　device.　The　best　structure　obtained　in　this　paper　to　improve　the　light-emitting　performance　of　the　device　is:　the　size　of　the　N　electrode　window　is　5μm×10μm,　and　the　spacing　is　37μm;　the　size　of　the　P　electrode　window　is　15μm×5μm,　and　the　spacing　is　30μm.　©　2021　IEEE.