Objective  To investigate the short-term outcomes of 3D printed titanium trabecular metal (TTM) acetabular cups in treatment of revision hip arthroplasty with acetabular bone deficiency.Methods  The clinical data of 8 patients with acetabular bone deficiency using 3D printed TTM acetabular cups and bone allograft at Wuxi People’s Hospital from February 2017 to August 2018 were retrospectively analyzed.There were 3 males and 5 females，with an average age of (78.1±7.0)years (64~87 years).According to Paprosky acetabular defect classification，2 had ⅡB defects，1 had ⅡC defects，3 had ⅢA defects and 2 had ⅢB defects.The acetabular defect was reconstructed by TTM acetabular cups and bone grafting technique.The TTM acetabular cups were designed and fabricated according to each patient’s bone defects using 3D printing technology.During the follow-up，Harris hip score was recorded to assessed the efficacy，and X-rays were performed to evaluate the acetabular prosthesis position，migration，and graft incorporation.Results  The mean follow-up was (25.0±6.1)months (18~36 months).The Harris hip score improved from (36.3±8.5)preoperatively to (82.8±6.3)postoperatively.TTM cups resulted in generally reliable restoration of the hip center.The difference of vertical distance and horizontal distance between bilateral sides was (0.5±2.7)mm and (－2.0±6.1)mm，respectively.Acetabular component loosening was not found，effective bone incorporation was achieved in all cases，and no re-revisions had been conducted at last follow-up.Conclusion  3D printed titanium trabecular metal acetabular cups combined with bone allograft for revision hip arthroplasty with acetabular bone deficiency canprovide early stability，improve hip scores and reconstruct the rotation center in short-term follow-up.