23-year old male tae-kwon-do athlete visited with both Achilles tendon rupture after landing both lower limbs at the same time performing kick motion on the same day. Rt. achilles tendon was treated with open tenorrhapy by modified Bunnel method, and Lt. achilles tendon was treated with minimal invasive suture with Achillon. In young tae-kwon-do athlete both Achilles tendon rupture is very rare without any causing factors. From this case, we need to consider the possibilities of both Achilles tendon rupture in young patients during exercise and precaution is needed especially in landing movement.