Abstract：[Objective] To explore the application of a new type of hemispherical 3D printing augments in Acetabular bone defects reconstruction, and to compare the outcomes of hemispherical augments and tantalum augments. [Methods] A retrospective study was conducted on 67 patients (67 hips）from January 2018 to June 2019 who underwent hip revision surgery.35 patients（35 hips）were treated with hemispherical titanium augments(HTA Group) and the other 32 patients(32 hips) were treated with orange slice-shaped tantalum augments (OSTA Group). After the last follow-up, the clinical and imaging outcomes of 35 patients in the BA group and 32 patients in the TA group were evaluated separately. [Results] Both groups were followed up for more than two years. There were no significant differences in Harris hip score, the restoration of hip center of rotation (HCOR), and the leg length discrepancy (LLD) between the two groups. Comparing the time of Acetabular reconstruction, the experimental group averaged 33.8min (16min~52min)and the control group averaged 62.2min (30min~84min), the difference was statistically significant. There was no loosening or displacement of the prosthesis in all patients. [Conclusion] The clinical and imaging results of hemispherical augments and tantalum augments are similar, but the reconstruction of the surgical procedure is more rapid and convenient. This technique is a reliable alternative for reconstruction of severe acetabular bone defects.