The invention discloses a labor-saving support structure for electrocars and motorcycles, which comprises a double-support frame and a single support frame which is welded and fixed at the double-support frame, wherein the top part of the double-support frame is welded with a connecting piece, the two ends of the double-support frame are respectively provided with a supporting leg, the supporting leg which is at the same side of the single support frame on the double-support frame is a movable supporting leg, a hinged seat is welded at one end of the double-support frame, which is hinged with the movable supporting leg, a support pillar is arranged in the hinged seat, a compression spring is sleeved on the support pillar, pinholes are respectively arranged on the two side plates, a rotary block is hinged onto the hinged seat through a hinge pin, the movable supporting leg is welded at the bottom of the rotary block, one end of the double-support frame, which is hinged with the movable supporting leg, is provided with a torsitional spring support at the inner side in a welding way, a torsional spring is arranged on the torsional spring support, one end of the torsional spring is connected onto the top part of the double-support frame, and the other end of the torsional spring is connected onto the movable supporting leg. The invention has the advantages of simple structure, stability for supporting and easiness in implementation of a double-support vehicle.