Positioning ruler for taking out fracture inside-fixture

The invention discloses a positioning ruler for taking out a fracture inside-fixture, relating to a medical apparatus. The positioning ruler for taking out the fracture inside-fixture is provided with a positioning ruler which is provided with transparent scales; and transparent sizes are arranged in correspondence with the scales. When an X-ray picture is taken before an operation, the start point of the positioning ruler is positioned at the start point of an original cut. When the X-ray picture is taken, the positions of a fixing plate and each fixing bolt on the body surface can be determined according to the images of the fixing plate and each fixing bolt on the X-ray picture, wherein the images of the fixing plate and each fixing bolt correspond to the scales of the positioning ruler. Small cuts are respectively made for taking out the fixing bolts according to the determined position of each fixing bolt on the body surface, and then a small cut is made at one end of the fixing plate to take out the fix