The invention relates to the field of construction of mechanical and electrical professional equipment pipeline mounting in public corridors of station equipment such as metros and light rails, in particular to a construction method for enhancing the anti-seismic performance of integrated support-hangers. A diagonal bracing mounting method comprises the following steps that firstly, formwork expanded-base anchor bolts are mounted, then steel channel connecting pieces are fixed to concrete top plates, and then oblique angle connecting pieces are fixed to integrated support-hanger vertical rods,and diagonal bracing steel channels are mounted. A full-length mounting method comprises the following steps that every two full-length steel channels are connected through a U-shaped connecting piece, and every two full-length steel channels and the vertical rod of each set of integrated support-hanger are fixed through wing-shaped connecting pieces. A cantilever mounting method comprises the following steps the formwork expanded-base anchor bolts of cantilevers are fixed to structural columns of a single building, and then the cantilevers and the full-length steel channels are connected through the wing-shaped connecting pieces. According to the construction method, displacement of all points of equipment pipelines is reduced, damage of seismic force in the horizontal and vertical directions is effectively resisted, and the equipment pipelines on supports are protected.