Objective：To analyze the clinical outcomes of the locking compression plate（LCP） fixation for the unstable sacral fracture. Methods： Nine patients with unstable sacral fracture were treated with locking compression plate fixation in our department,including 7 males and 2 females,with an average age of 34.8 years （ranged from 25 to 49 years）. AO classification system found 1 B1 ,4 B2 ,2 B3 and 2 C1 type. Dennis classification found 6 Ⅰ section sacral fracture and 3 Ⅱ section sacral fracture. Incisions （6-8 cm） were made from each side of superior iliac spine to ipsilateral inferior iliac spine along iliac crest. After the fractures or dislocations were exposed and reduced,LCPs were chosen and remodeled. The iliosacral posterior ligaments were restored if injured. The LCP was pushed cutaneously to the other incision, placed on both dorsal ilia and fixed with locking screws. Each side of postal LCP was fixed with 3 locking screws for effective fixation. The reduction and fixation of fractures or dislocation were assured by radiostereoscopy. The operations lasted 45 min averagely （ranged from 30-80 minutes） and no patient needed blood transfusion. The average X-ray exposure period was 4 min（from 2-10 minutes）. Results： All the patients were followed-up for a mean of 13.8 months,ranged from 6 months to 21 months. There was no iatrogenic nerve injury. The function and the feeling of sacroiliac joint and low extremities recovered to normality. According to the Majeed standards, the results were excellent in 4,good in 4,and fair in 1. Conclusion： The locking compression plate fixation is a simple and effective treatment for the unstable sacral fractures,with less trauma and complications.