In　order　to　improve　displaying　quality　of　the　color　field　emission　display,　the　problems　just　as　luminance　non-uniformity,　gray-scale　losing　and　gray-scale　aberration　and　so　on　which　exist　in　color　Field　Emission　Display　(FED)　are　analyzed.　The　solving　method　about　brightness　and　gray-scale　emendation　is　proposed　through　experiment　testing　and　theory　analyzing.　The　emendation　technology　is　used　into　color　FED　driving　system.　Thus,　the　luminance　uniformity　and　gray-scale　reproducing　performance　are　improved.　At　the　same　time,　the　hiberarchy　and　detail　of　image　are　improved.