Abstract: [Objective] To explore the clinical efficacy of autogenous tendon transplantation in repairing chronic Achilles tendon injuries. [Methods] A retrospective analysis was conducted on the clinical data of seven patients who underwent autogenous tendon transplantation for chronic Achilles tendon injuries in Lanzhou University Second Hospital from July 2016 to October 2021. Clinical consequences were collected and analyzed among preoperatively, 6 months postoperatively and the latest follow-up, including Visual Analog Scale (VAS) for pain, American Orthopaedic Foot and Ankle Society Ankle-Hindfoot Scale (AOFAS), ankle range of motion (ankle ROM), Achilles Tendon Rupture Score (ATRS) and triceps surae muscle strength. [Results] All patients underwent the procedure successfully without complications such as incision infection or postoperative re-rupture of the Achilles tendon. The average follow-up time was (46.1±19.6) months. Compared with preoperative values, VAS scores significantly decreased at both 6 months postoperatively and the latest follow-up [(2.9±0.9), (1.7±0.8), (0.6±0.5), P<0.001], AOFAS scores significantly increased [(57.4±10.0), (81.1±4.5), (95.1±4.0), P<0.001], ankle ROM significantly increased [(27.4±3.0), (50.3±3.3), (56.6±3.5), P<0.001], ATRS scores significantly improved [(41.1±5.8), (71.6±4.4), (93.3±4.2), P<0.001], and triceps surae muscle strength showed significant improvement（Number of cases，III/IV/V）[(7/0/0),(2/5/0),(0/0/7), P<0.001]. [Conclusion] For patients with chronic Achilles tendon injuries, combined with appropriate rehabilitation exercises, treatment with autogenous transplantation of the peroneus longus tendon or half of the flexor hallucis longus tendon,can achieve satisfactory clinical outcomes.