The　operating　characteristic　testing　of　contactor　based　on　high-speed　cameras　was　introduced.　The　movement　process　of　AC　contactor　was　tested　by　high　speed　camera　in　different　closing　and　opening　phase　angle　and　the　displacement　and　speed　curves　were　obtained.　The　feasibility　and　accuracy　of　the　method　was　verified　by　comparison　of　the　test　results　between　the　laser　displacement　sensor　and　high　speed　camera.　Meanwhile,　the　high　speed　camera　got　arc　image　of　AC　contactor　closing　process　and　the　arc　time　distribution　curve　was　obtained　by　using　the　MATLAB　image　processing　toolkit　to　extract　the　contact　bounce　information　on　load.　Also,　the　arc　during　breaking　course　was　caught　by　high　speed　camera　and　the　breaking　characteristics　of　the　contactor　was　obtained.　It　provided　analysis　basis　to　improve　the　dynamic　characteristic　of　the　contactor.