The invention discloses an energy-saving motor box driven by a synchronous connecting rod. The motor box comprises a fixed box body and a shaking box body arranged over the fixed box body, a pair of rotation blocks in parallel is arranged in the fixed box body, and the surface of the fixed box body is provided with a driver; a motor is powered on via a button switch, a mechanical watch positionedin an accommodation sleeve is wound up, and operation is simple; when there is light, the light irradiates on a Fresnel Lens through transparent glass, so that a photovoltaic panel can receive the light in the focusing state and supply power to a storage battery, and energy is saved; the Fresnel Lens is used, so that the photovoltaic panel of smaller area can be used to receive a large quantity oflight, the cost is reduced, and the practical effect is good; and first and second magnets are in mutual repulsion, so that a movable rod can be contracted into a hollow cylinder, and different specifications of mechanical watches can be adapted to.