The invention discloses a novel steel cable suspending device and a method for mounting the same. The novel steel cable suspending device comprises a stool-shaped suspending disc and suspending mechanisms. The stool-shaped suspending disc comprises a disc (1) and a support mechanism, the support mechanism is welded at the bottom of the disc, and the suspending mechanisms are suspended on the suspending disc via connecting screws (6); each suspending mechanism comprises a suspending cable (5), sleeves (9) are respectively arranged at two ends of each suspending cable (5), and internal threads which are matched with the connecting screws are arranged on the upper portions of the sleeves; two pairs of suspending holes (3) are formed in the disc of the suspending disc by means of machining, the lower end of each connecting screw which penetrates the corresponding suspending hole is screwed into the upper portion of the corresponding sleeve, and each suspending mechanism is suspended by the corresponding pair of suspending holes. The method for mounting the novel steel cable suspending device includes mounting the suspending disc; mounting the connecting screws; mounting the suspending mechanisms. The novel steel cable suspending device and the method have the advantages of easiness and accuracy in mounting the novel steel cable suspending device in place and simplicity in construction.