Objective To introduce the surgical technique and preliminary clinical results of arthroscopic eight-figure double-row knotless anchor technique in the treatment of massive rotator cuff tears. Methods Twenty four patients with massive rotator cuff tears were treated with arthroscopic eight-figure double-row knotless anchor technique. Two screws were drilled in the medial side of the humeral bone and the shoulder sleeve, and then placed in the appropriate position of the humeral joint. Use the suture hook or thread threading device to cross the free ends of eight-figure sutures through the torn shoulder sleeves without knotting. The external row was fixed with two tendon and ligament anchors. After threading the ring, the external row fixed anchors were cross fixed on the outer edge of the greater tubercle of humerus, and eight-figure sutures were evenly covered with the torn rotator cuff. Results All patients had operation performed smoothly without serious complications, and followed up for 12~36 months. At the last follow-up, the UCLA score increased to (26.3±2.9), and the Constant score increased to (75.8±3.9), with statistically significant changes (z = 4.311 and 4.295, P < 0.01). The range of motion and pain of shoulder joints were significantly improved compared with those before operation. The postoperative satisfaction rate was 92%. Conclusion The arthroscopic of eight-figure double-row knotless anchor technique in the treatment of massive rotator cuff tears does achieve satisfactory clinical outcomes in short term with significant functional improvement of?shoulder?joints.