Abstract: The present invention relates to a rotational control mechanism for an electrical tool comprising a micro switch having a triggering portion, a frame to securely dispose the micro switch, a revolver pivotally connected on the frame via a rotating shaft, and a triggering element disposed on and paralleled with an inner lateral wall of the revolver to trigger the triggering portion of the micro switch of the frame. The rotational control mechanism is benefited via the revolver pivotally connected with the frame, and the triggering element disposed on the inner lateral wall of the revolver and parallel with the wall to trigger the triggering portion of the micro switch, therefore overcomes shortcomings of the existing control mechanism including the revolver being unable to rotate and the triggering portion tending to be false triggered easily, and achieves technical effects of flexible and reliable control, stable performance, compact structures and reliable transmission.