A kinetic energy harvesting mechanism, the kinetic energy harvesting mechanism comprising a fixing shaft disposed uprightly, an input member, and a fixing shaft driving assembly, characterized in that the kinetic energy harvesting mechanism comprises: a rotating shell (20A, 20B) being hollow and disposed on the fixing shaft, wherein the rotating shell (20A, 20B) is able to rotate relative to the fixing shaft; the input member pivotally disposed in the rotating shell (20A, 20B) and axially connected to the fixing shaft; and the fixing shaft driving assembly disposed in the rotating shell (20A, 20B) and having a first one-way bearing disposed in the rotating shell (20A, 20B); a second one-way bearing disposed in the rotating shell (20A, 20B), wherein a rotating driving direction of the second one-way bearing is contrary to a rotating driving direction of the first one-way bearing; a first driving member connected to the first one-way bearing to be disposed in the rotating shell (20A, 20B), wherein the fixing shaft is inserted through the first driving member, the rotating shell (20A, 20B) drives the first driving member by the first one-way bearing, and the first driving member is rotated in a rotating direction of the fixing shaft; a second driving member connected to the second one-way bearing to be disposed in the rotating shell (20A, 20B), and coaxially disposed with the first driving member at a spaced interval, wherein the fixing shaft is inserted through the second driving member, the rotating shell (20A, 20B) drives the second driving member by the second one-way bearing, the second driving member is rotated in the rotating direction of the fixing shaft, and the rotating direction of the second driving member is contrary to the rotating direction of the first driving member; a third driving member (43, 43C) disposed in the rotating shell (20A, 20B), and connected to the first driving member and the second driving member; and wherein one of the first driving member, the second driving member, and the third driving member (43, 43C) is connected to the input member, and the input member drives the first driving member, the second driving member, and the third driving member (43, 43C) to move simultaneously. a rotating shell (20A, 20B) being hollow and disposed on the fixing shaft, wherein the rotating shell (20A, 20B) is able to rotate relative to the fixing shaft; the input member pivotally disposed in the rotating shell (20A, 20B) and axially connected to the fixing shaft; and the fixing shaft driving assembly disposed in the rotating shell (20A, 20B) and having a first one-way bearing disposed in the rotating shell (20A, 20B); a second one-way bearing disposed in the rotating shell (20A, 20B), wherein a rotating driving direction of the second one-way bearing is contrary to a rotating driving direction of the first one-way bearing; a first driving member connected to the first one-way bearing to be disposed in the rotating shell (20A, 20B), wherein the fixing shaft is inserted through the first driving member, the rotating shell (20A, 20B) drives the first driving member by the first one-way bearing, and the first driving member is rotated in a rotating direction of the fixing shaft; a second driving member connected to the second one-way bearing to be disposed in the rotating shell (20A, 20B), and coaxially disposed with the first driving member at a spaced interval, wherein the fixing shaft is inserted through the second driving member, the rotating shell (20A, 20B) drives the second driving member by the second one-way bearing, the second driving member is rotated in the rotating direction of the fixing shaft, and the rotating direction of the second driving member is contrary to the rotating direction of the first driving member; a third driving member (43, 43C) disposed in the rotating shell (20A, 20B), and connected to the first driving member and the second driving member; and a first one-way bearing disposed in the rotating shell (20A, 20B); a second one-way bearing disposed in the rotating shell (20A, 20B), wherein a rotating driving direction of the second one-way bearing is contrary to a rotating driving direction of the first one-way bearing; a first driving member connected to the first one-way bearing to be disposed in the rotating shell (20A, 20B), wherein the fixing shaft is inserted through the first driving member, the rotating shell (20A, 20B) drives the first driving member by the first one-way bearing, and the first driving member is rotated in a rotating direction of the fixing shaft; a second driving member connected to the second one-way bearing to be disposed in the rotating shell (20A, 20B), and coaxially disposed with the first driving member at a spaced interval, wherein the fixing shaft is inserted through the second driving member, the rotating shell (20A, 20B) drives the second driving member by the second one-way bearing, the second driving member is rotated in the rotating direction of the fixing shaft, and the rotating direction of the second driving member is contrary to the rotating direction of the first driving member; a third driving member (43, 43C) disposed in the rotating shell (20A, 20B), and connected to the first driving member and the second driving member; and wherein one of the first driving member, the second driving member, and the third driving member (43, 43C) is connected to the input member, and the input member drives the first driving member, the second driving member, and the third driving member (43, 43C) to move simultaneously.