The invention relates to a rotating permanent-magnet driving mechanism for a high-voltage vacuum circuit breaker. The technical scheme includes that the rotating permanent-magnet driving mechanism comprises a spindle connected with a three-phase driving shaft of the high-voltage vacuum circuit breaker; by using a central line of the spindle as a rotating axis, a radius around the rotating axis is selected; a permanent-magnet field and an electromagnetic field are established by taking an arc, around the rotating axis, of an outer end point of the radius as a central line, the permanent-magnet field is used for keeping switching-on of the high-voltage vacuum circuit breaker, and superposition of the permanent-magnet field and the electromagnetic field are used for achieving switching-off and switching-on operation of the high-voltage vacuum circuit breaker. The rotating permanent-magnet driving mechanism has the advantages that reciprocating rectilinear movement of an iron core of a directly-operated type monostable permanent-magnet mechanism is changed into reciprocating around-axis arc movement, the problem that the monostable permanent-magnet mechanism needs to be operated to enable rectilinear movement of the spindle to be changed into around-axis torsion when the high-voltage vacuum circuit breaker is switched on and off by three-phase coaxial reciprocating around-axis torsion is solved, and the rotating permanent-magnet driving mechanism is convenient to use and good in effect; the rotating permanent-magnet driving mechanism effectively solves the problems that a power transmission structure of a permanent-magnet operating mechanism is complex and high in fault rate, magnetic energy of a magnet cannot be used effectively and ferromagnetic materials are wasted.