Height adjustable lift table

A lifting table with adjustable height is provided, which comprises two lifting column jackets arranged on one downside of the tabletop. Each of the column jackets comprises an outer tube on the base, an inner pipe with one end inspaned in the outer tube and the other end positioned on the downside of the tabletop, a lifting poker inside the inner pipe, as well as a cannula in the outer tube. The lifting poker is placed in the cannula and can be moved relatively to the cannula, which also makes the inner pipe moved relatively to the outer tube. The top of the lifting poker is equipped with a driven wheel with one side provided with a rotating shaft where a driving wheel is arranged to mesh the driven wheel. Each of the rotating shafts is positioned at both ends of a transmission shaft to rotate the two rotating shafts running synchronously. A driving device is also provided for driving the running of the transmission shaft to make the inner pipe moved relatively to the outer tube, thereby realizing the regulation function of the height of the tabletop.