Surgical operation wire retractor capable of being freely combined and adjusted

The invention discloses a surgical operation wire retractor capable of being freely combined and adjusted. The surgical operation wire retractor comprises a wire retractor body composed of a handle part and a retractor part, a supporting and adjusting device and an auxiliary fixing device; the supporting and adjusting device comprises a connecting seat, an adjusting screw rod and a negative pressure suction cup, the connecting seat is connected to the middle of the handle part of the wire retractor body, an adjusting screw hole is formed in the middle of the connecting seat, the adjusting screw rod is connected into the adjusting screw hole in a screwed mode, and the negative pressure suction cup is connected to the end, facing the backbending direction of the retractor part, of the adjusting screw rod and rotatably connected with the adjusting screw rod; and the auxiliary fixing device comprise a connecting rod and a cementation sheet, one end of the connecting rod is hinged to the tail end of the wire retra