Fixing method for pelvic posterior ring fracture and fixing device for pelvic posterior ring fracture

The invention relates to the field of bone fracture treatment, and discloses a fixing method for pelvic posterior ring fracture and a fixing device for the pelvic posterior ring fracture. The method comprises the following steps that: a fixing mode is determined according to the type of the pelvic posterior ring fracture, wherein the fixing mode includes the double-side single-iliac-screw fixation and the double-side double-iliac-screw fixation; and screws of a fixing mechanism are put onto the ilium according to the screw path positions for fixing the pelvic posterior ring fracture. The fixing method provided by the invention has the advantages that the fixing effect is good; the stress-resistant effect is high; the indications are wide; the cost is low; and the injury is little.