The　principle　and　preparation　method　of　the　ion-exchange　technology　used　in　surface-conduction　electron　emitters　is　introduced　in　this　paper.　Surface-conduction　electron　emitters　through　the　use　of　ion-exchange　technology　were　developed.　The　relationships　between　device　current　and　emission　current　on　device　voltage　has　been　determined.　The　electronic　emission　characteristic　of　surface-conduction　electron　emitters　were　also　determined.　The　results　indicate　that　the　relationship　between　emission　current　and　device　voltage　is　non-linear.　A　device-voltage　range　between　20　and　27　V　results　in　the　best　emission　efficiency.