Background : Tricuspid valve repair (TVR) was performed concomitantly with pulmonary valve replacement in many repaired tetralogy of Fallot (TOF) patients and outcomes were investigated. Methods : This retrospective study included patients who underwent TVR concomitantly with pulmonary vale replacement at Samsung Medical Center from January 2000 to December 2016 after TOF total correction. TVR patient data were compared to those of patients who underwent pulmonary vale replacement alone. Tricuspid annulus diameter and valve coaptation on echocardiography and right ventricular volume on magnetic resonance imaging were compared. Results : Thirty-eight patients were enrolled. The degree of tricuspid regurgitation was significantly decreased after operation in the TVR group (2.8 ± 1.0 to 1.4 ± 0.6, P .001). Tricuspid valve annulus and annuloectasia before operation did not vary between groups (21.1 ± 6.3 and 41.4% in no TVR vs. 21.3 ± 4.8 and 52.6% in TVR). However pre-operative right ventricular volumes were larger in the TVR group. Normal tricuspid valve coaptation (body to body) was observed less frequently in the TVR group than in the other group (52.6% vs. 93.1%, P .001). Tricuspid annulus diameter decreased after surgery in both groups. Pre-operative tricuspid regurgitation had a linear correlation with right ventricular volume, but not with tricuspid annulus size. Conclusion : Tricuspid annulus diameter decreased significantly regardless of TVR at the time of pulmonary valve replacement. Abnormal coaptations were observed more in patients group and the degree of pre-operative tricuspid regurgitation was linearly correlated with right ventricular volume rather than tricuspid annulus size.