Objective To systematically review the research progress of Internal Brace suture tape augmentation technique in the treatment of chronic lateral ankle instability (CLAI), and to provide reference for clinical practice. Methods The related literatures of Internal Brace suture tape augmentation technique in the treatment of CLAI were extensively reviewed at home and abroad, and the effectiveness was evaluated. Results Biomechanical studies showed that the Internal Brace suture tape augmentation technique significantly improved the immediate stability of ankle ligaments after repair. Clinical studies have shown that this technique alone or in combination with Brostr?m procedures can achieve good results in the treatment of CLAI, especially in patients with poor ligament stump quality, systemic ligament laxity, revision surgery, and high exercise needs. Conclusion Internal Brace suture tape augmentation technique is helpful for patients with CLAI to obtain immediate stability, accelerate rehabilitation, and early return to exercise, especially for patients with poor prognostic factors. More high-quality clinical studies are needed for further verification in the future.