Background: The orbits are bony structures of the skull that house the globe , extra ocular muscles (EOM), nerves, blood vessels, lacrimal apparatus and adipose tissue. Each orbit protect the globe, while the supportive tissues therein allow the globe to move in three dimensions (horizontal –verticalrotational). Objectives: Evaluation of orbital volume after orbital fractures reconstruction by software orbital volume measurement using CT scan. Patients and methods: This study was conducted on 20 patients with a unilateral orbital blowout fracture treated surgically at Department of Plastic and Reconstructive Surgery in AL-Azhar University Hospitals from October 2018. To October 2019 and followed for 3 months were identified and included in this study. Results: 5% of patients had positive limitation of EOM and 90% of patients were good Pt. acceptance post-operative. 5% of patients were dystopia post-operative, all of patients had no infection, enophthalmouse or extrusion. Conclusion: We must exert great effort to prevent occurrence of these injuries through a joint cooperation with civil society through the dissemination of culture and means of safety on the highways. Rules and basics of craniofacial osteosynthesis must be known to craniofacial surgeon starting from wiring osteosynthesis.