Objective To estimate the effection of orbital blowout fracture when Medpor was implanted to restore it. Methods The plastic operations on 15 patients with orbital blowout fracture were reviewed and studied. Results On discharge from the hospital, function and outline form was improved greatly in all cases. Conclusion Early diagnosis, early treatment and early movement training after surgery were emphasized. Medpor is one of the preferred material on reparing orbital blowout fracture.