Abstract:[Objective] To compare the clinical results of primary total hip arthroplasty through direct anterior approach with or without repair of anterior capsule. [Methods] From January 2022 to July 2022, a total of 205 patients who underwent primary THA by DAA approach in our department were included in this study. According to doctor-patient communication, 102 patients had the anterior capsule resected completely, while other 103 patients had the capsule repaired after prosthetic placement. The documents regarding to perioperative period, follow-up and images were compared between the two groups. [Results] There were no significant differences in operation time, incision length, intraoperative blood loss, postoperative walking time, incision healing grade and hospital stay between the two groups (P>0.05). All patients were followed up for more than 1 year, and there was no statistically significant difference in the time to regain full weight bearing between the two groups (P>0.05). Compared with those preoperatively, the patients in both resection group and the repair group got significant improvements in terms of VAS score [(6.8±1.1), (0.05±0.2), P<0.001; (6.6±1.1), (0.04±0.2), P<0.001], Harris score [(42.7±5.9), (94.7± 1.9), P<0.001; (41.7±6.1), (94.9±1.6), P<0.001], hip flexion-extension ROM [(48.1±16.6)°, (122.0±5.4)°, P<0.001; (47.1±14.7)°, (121.9± 4.6)°, P<0.001], internal-external rotation ROM [(35.7±14.1)°, (81.4±4.2)°, P<0.001; (32.7±13.9)°, (81.1±5.2)°, P<0.001]. However, there was no significant difference in the above indexes between the two groups at any corresponding time points (P>0.05). Radiographically, there were no significant differences in acetabular abduction angle, acetabular anteversion angle, bilateral femoral length difference and femoral prosthetic position between the two groups (P>0.05). [Conclusion] In primary THA through DAA, anterior capsule resection or repair by suture has no remarkable impact on the clinical outcome. For beginners, extensive removal of the capsule is more conducive to expose the acetabulum and smooth surgical operation.