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Background: The Achilles tendon is the strongest tendon in the human body but also prone to injury and rupture, thereby requiring early diagnosis and treatment to prevent the development of lower limb dysfunction. Currently, the best treatment method for acute Achilles tendon rupture remains controversial. As both traditional incision repair and minimally invasive repair have limitations, we propose a new surgical method: the modified Ma-Griffith method combined with minimally invasive small incision(M-G/MISI). This study aimed to compare the efficacy of M-G/MISI and the modified suture technique (MST) for the treatment of acute Achilles tendon rupture.Methods: We conducted a retrospective review of the medical records of all patients who underwent treatment for acute Achilles tendon rupture between January 2012 and January 2020 at our hospital. A total of 67 patients were included and divided into two groups: 34 males in the M-G/MISI treatment group and 33 patients (2 females and 31 males) in the MST group. Demographic characteristics, operative details, and postoperative complications were recorded, and data were statistically analysed using SPSS 24.0 for Windows (IBM Corp. Released 2016. IBM SPSS Statistics for Windows, Version 24.0) to compare the treatment efficacy of the two surgical methods.Results: Although there was no difference in demographic characteristics between the two groups, there were significant differences in the incision length, intra-operative blood loss, post-operative Achilles tendon total rupture score, and post-operative American Orthopedic Foot and Ankle Society score. Post-operatively, there was one case of traumatic Achilles tendon rupture in the M-G/MISI group and one case each of infection and deep vein thrombosis in the modified suture group.Conclusion: After follow-up, the post-operative recovery of acute Achilles tendon rupture treated with M-G/MISI is better than that with the MST.