The invention belongs to the field of civil engineering construction, and particularly relates to an integral hoisting system and a construction method for a steel truss support concrete heavy roof system. The integral hoisting system for the steel truss support concrete heavy roof system comprises hydraulic jacks, a hydraulic pump station, a steel stranded wire, support frames and a guide frame, wherein a plurality of hoisting suspension points are in uniform and symmetrical distribution; each hoisting suspension point is provided with one support frame; each support frame is fixed above a peripheral shear wall or a support post; one hydraulic jack is arranged on each support frame, and is connected with the hydraulic pump station through an oil pipe; each hydraulic jack is of a core penetrating type structure; a work anchor gear is arranged inside each hydraulic jack; the steel stranded wire passes through the right center of the hydraulic jack and is fixed through the work anchor gear; the lower end of the steel stranded wire is provided with a positioning anchor gear; and the positioning anchor gear is directly connected with an integral assembled steel truss. The integral hoisting system and the construction method have the advantages that the concrete is cast before a steel truss roof is hoisted in place; the work procedures are simplified; the workload is reduced; and the construction period is shortened.