To determine pelvic fracture, the following three steps are required: 1. Ask if there is any history of trauma, such as any direct impact on the pelvis, or any fall from a height. 2. Determine if there are any signs related to pelvic fracture, press around the pelvis to see if there is any obvious pressure pain, and then do a pelvic squeeze and separation test. It is important to note that the squeeze test is done first when doing this test, that is, the hands are placed on the position of the anterior superior iliac spine and squeezed medially. If you are able to push slightly, do not continue with the separation test and immediately fix the entire pelvis with a sheet or brace to prevent heavy bleeding due to the pelvic fracture. If there is a positive squeeze and separation test, it is highly suggestive of pelvic fracture.3. After doing the above tests, there are corresponding auxiliary examinations, commonly used are pelvic X-ray, CT, MRI, etc., of which CT is the most advantageous, because CT is the fastest, and does not require the patient to stand upright, does not require the patient to move, has very high imaging accuracy, and can perform 3D reconstruction. Generally, after these three steps, we can determine whether there is a pelvic fracture or not.