The department uses internal screw fixation minimal-invasive surgery to treat pelvic ring fracture. In practice, small incision is performed in superior iliac spine and the upper edge of the pubic symphysis, as well as the posterior iliac spine. Combining with iliac screw, rod annular fixed pelvic ring, the surgery has achieved good curative effect. The surgery is highly recommended to pelvic ring closed fracture TileB、C and patients without neurovascular injury. Compare with the plate internal fixation or stent external fixation surgeries, the technique is featured by minimal wound, strong fixation, less operation time, less infections and complications and better recovery. The patient can take weight-bearing exercise in two days after surgery, which prevents the complications caused by long time bedding after fracture. Meanwhile, the combination external usage of Chinese herbal decoction and massage oil prepared by the department also can promote the recovery of limb activities.