An　approach　of　improved　permanent　magnetic　actuator　of　vacuum　circuit　breaker　is　presented　in　this　paper.　By　means　of　setting　up　the　auxilliary　opening　coil　and　the　at　diary　closing　coil,　the　performance　of　the　permanent　magnetic　actuator　is　obviously　improved,　as　results,　the　closing　and　opening　times　become　fast,　the　Initial　closing　and　opening　velocities　become　high,　the　peak　currents　of　the　closing　and　opening　coils　become　small,　and　the　energy　consumptions　of　the　capacitors　reduce.