The invention discloses a 10KV outdoor permanent magnet circuit breaker controller. The controller comprises a shell, an end cover, a bottom plate, a voltage transformer, a chute, a square rod, a square groove, a spring I, a T-shaped rod I, a ball, a screw, a T-shaped rod II, a spring II, a magnetic ring, a limiting block, a limiting groove, a groove, a storage groove, a spring III, an inclined block, a connecting rod, a clamping block, a T-shaped rod III, a spring IV, a clamping groove, a protective plate I a protective plate II, and a fixing block. The end cover rotates to drive the limitinggroove to move; the T-shaped rod II moves to drive the limiting block to move to be separated from the magnetic ring; under the action of the elastic force of the spring II, the limiting block movesinto the limiting groove to limit the position of the end cover; the connecting rod extrudes the clamping block to enable the clamping block to move, the clamping block moves to drive the T-shaped rodIII to move, the T-shaped rod III moves to stretch the spring IV, the spring IV generates elastic force, and when the clamping block is aligned with the clamping groove, the clamping block moves intothe clamping groove, and then the connecting rod is clamped into the storage groove.