Early reduction and stabilization of the pelvic bone after traumatic unstable pelvic bone fracture is the most effective method to control life-threatening bleeding and reduce late complication. In this study, we compared the effect of the non-invasive pelvic belt on various positions, and studied the effects of weight bearing and shifting during walking on pelvic belt position. Case 1) separation of symphysis pubis; Case 2) fracture of the superior and inferior ramus of the right pubis; Case 3) fractures of the superior and inferior ramus of both pubis and separation of symphysis pubis. Pelvic belt was prescribed in all three cases. Pelvic belt reduction reduced the distance between fracture line by 40~60% at all levels. Therefore, pelvic belt reduction is recommended as a non-invasive, safe and effective rehabilitative treatment for pelvic bone fracture patients to restore function without pain or secondary injury.