CT is based on X-ray examination, which will image the object from all angles, and then the computer will arrive at the tomography image after calculation. Depending on different setting parameters, the image can be seen in different thicknesses and resolutions, with high-density shadows becoming white and low-density shadows being translucent. For patients with fracture, if the fracture is slight, the fracture line may not be visible on X-ray, but the result is much better on CT, which can see the corresponding fracture line translucent shadow in the high-density bone area. If the fracture is very slight and the fracture break is not displaced, CT may not always be able to detect it. When diagnosing the disease in actual cases, CT must refer to the patient’s actual condition and clinical manifestations. If the fracture is displaced, the fracture line transmission shadow can be clearly seen on CT with displacement. In the clinic, if we see a suspected fracture case, although there is no obvious manifestation on imaging, we should also follow the routine treatment of fracture, and then perform CT examination after 1-2 weeks when the bone around the fracture line begins to resorb to rule out the possibility of fracture. If you need to clarify the various conditions of the fracture, you can do CT scanning plus three-dimensional reconstruction, to understand the specific situation of the fracture and the surrounding tissues, which is conducive to the development of the surgical plan.