The utility model discloses a portable light -duty jacking device, the on -line screen storage device comprises a base, base both sides below is provided with a set of gyro wheel respectively, base top is provided with two stands perpendicularly, and top beam connected is passed through at the stand top, be provided with fixed otic placode on the back timber, still include the jacking sleeve, jacking sleeve suit is provided with the jacking platform on the jacking sleeve on the stand, be provided with the platform pillar on the jacking platform, be provided with the promotion otic placode on the platform pillar. The device overall structure is simple, low cost, work efficiency are high, low in labor strength.