The invention discloses a dual-power switching mechanism and a switch device having the same. The dual-power switching mechanism comprises a common power switch which is a vacuum tube switch; a standby power switch which is a vacuum tube switch; and a driving mechanism including a first driving portion and a second driving portion, wherein the first driving portion turns on or off the common powerswitch by a lever structure; the second driving portion turns on or off the standby power switch by the lever structure; and the arm of force of the lever structure on the side of the driving mechanism is greater than the arm of force of the lever structure on the side of the common power switch or the standby power switch. The dual-power switching mechanism solves the problem that a dual-powerswitching mechanism in the prior art has a low switching speed between its common power switch and its standby power switch, and cannot turn off or on the switch contact with 20ms.