Abstract:[Objective] To introduce the surgical technique and preliminary clinical results of a modified minimally invasive repair of acute closed Achilles tendon rupture. [Methods] From January 2018 to January 2020, 35 patients underwent modified minimally invasive repair of acute closed Achilles tendon rupture. A median longitudinal incision about 1.0~1.5 cm in length was made at the top of the broken Achilles tendon. The proximal end of Achilles tendon was pulled out with a U-shaped oval forceps and then the distal end of Achilles ten- don was pulled out at plantar flexion of the anklet. The modified Bunnell suture technique was used to repair the broken Achilles tendon, and then the torn peritendinous tissue sutured, the incision closed in layers. [Results] All the patients had operation performed smoothly with operation time of (33.14±3.51) min, total incision length of (2.33±0.44) cm, and excellent incision healing. At the latest follow up last- ed for (12.52±1.41) months, the plantar-dorsal flexion range of motion significantly increased compared with that before operation, with AO- FAS score of (92.62±2.73) . According to Amer-Lindholm criterion, the clinical outcomes were marked as excellent in 29 cases, good in 6 cases, with excellent and good rate of 100%. [Conclusion] This modified minimally invasive repair of acute closed Achilles tendon rupture has the advantages of small incision, fewer complications, good functional recovery and low treatment cost.