Objective: To analyze the therapeutic effect of the double-row suture bridge technique under shoulder arthroscopy in treating rotator cuff injuries and its impact on postoperative shoulder joint functional rehabilitation. Methods: A retrospective analysis was conducted on the clinical treatment outcomes of 76 patients with traumatic rotator cuff injuries who underwent surgical treatment from 2024 to 2025. Patients who received single-row anchor suture fixation were designated as the control group (37 cases), while those who received the double-row suture bridge technique under shoulder arthroscopy during the same period were designated as the bridge group (39 cases). The ASES and Constant-Murley scores, as well as shoulder joint range of motion, were compared between the two groups before surgery and at 3 and 6 months postoperatively. Results: In the bridge group, the ASES score at 6 months postoperatively, as well as the shoulder joint forward flexion and abduction range of motion at 3 and 6 months postoperatively, were higher than those before surgery and in the control group during the same period, with statistically significant differences (P < 0.05). Conclusion: Compared to single-row anchor suture fixation, the double-row suture bridge technique under shoulder arthroscopy offers definite advantages in improving postoperative shoulder joint function and range of motion in patients with traumatic rotator cuff injuries, meeting the treatment needs of relevant patients.