ObjectiveTo investigate the application value and significance of threedimensional (3D) printing nasal bone reduction device in nasal bone reduction.Methods17 patients suffering from unilateral nasal bone fracture or bilateral fracture without contralateral dislocation treated in our hospital between Jan. 2016 and July 2018 were enrolled in our study. Maxillofacial computed tomography (CT) scans were performed preoperatively and one month after operation in all patients. Nasal bone reduction was performed using individualized 3D printing nasal bone reduction device. The preoperative and postoperative visual analogue scale (VAS) scores of nasal contour satisfaction as well as nasal ventilation were recorded and compared for each one.ResultsThe mean VAS score of nasal contour satisfaction got decreased from the preoperative (6.353±1.607) to the postoperative (1.529±1.036), and the difference was statistically significant (P<0.01). Meanwhile, the mean VAS score of nasal ventilation was decreased from the preoperative (2.912±2.315) to the postoperative (0.882 4±0.322 2), and the difference was also statistically significant (P<0.01). After operation, the subjective satisfaction on nasal contour and ventilation got improved in different degree in all the patients.ConclusionsNasal bone reduction by using 3D printing nasal bone reduction device is simple to operate and produces highly accurate restoration. This new method can help the surgeons to perform the nasal bone reduction effectively and accurately.