Abstract: It was focused on a construction technology of super high-rise steel buildings that could make second column be under the truss layer. With a specially designed temporary support system，reasonable arrangements for the construction sequence and a series of measures to control loading procedure and do deformation monitoring，this technology ensured that the upper truss could be freely deformed before the loading was completed，and the entire structure could transfer the force with the envisaged collaborative approach. Horizontal load and vertical load in the mega frame structure are carried primarily by the column and truss of the mega frame structure. Second column only carries vertical loads of the layer or few vertical load transfered by the upper layer.