Jack capable of automatically moving

The utility model provides a jack capable of moving automatically. The jack comprises a jacking electric cylinder. Three paths of the side face of the top of the jacking electric cylinder are rotationally connected to the upper end of a supporting screw rod, the lower end of the supporting screw rod is rotationally connected to the end points of a triangular supporting frame, an omnidirectional wheel train is transversely installed at the bottoms of the end points of the supporting frame, and a control combination, a switching combination and a lithium battery are connected and installed between every two end points of the three supporting frame. The supporting frame is in an equilateral triangle shape. According to the utility model, the situation that the jacking electric cylinder is not vertical due to the uneven ground or errors generated when the three supporting legs stretch out and draw back to the ground can be avoided; the control combination, the switching combination and the lithium battery are rea