The invention relates to a cable-stayed buckling construction system combined with a spandrel column; the cable-stayed construction system is suitable for construction of a steel truss arch bridge under the conditions of large span, heavy rod pieces and complicated topographic conditions. A cable-stayed buckling system comprises a fastening stay, an anchor cable, anchorages, a main buckle tower, an auxiliary buckle tower, the spandrel column, a border bridge pier, an auxiliary bridge pier, an arch seat and arch ribs. The construction method provided by the invention can efficiently solve the construction problems of the steel truss arch bridge under required conditions, effectively shortens the construction time, and obviously reduces the construction cost.