This prospective randomized controlled trial aims to compare the efficacy and safety of robot assisted treatment versus conventional surgery in patients with Tile B and C pelvic fractures. Eligible patients will be stratified according to Tile fracture classification and randomly assigned in a 1:1 ratio to receive either robot assisted minimally invasive fixation or conventional surgical treatment. Primary and secondary outcomes include pain relief, early mobilization, functional recovery, imaging outcomes, perioperative complications, venous thromboembolism events, laboratory parameters, opioid consumption, and healthcare resource utilization. The study aims to provide evidence for optimizing surgical treatment strategies for unstable pelvic fractures.