The purpose of this study was to evaluate the outcomes of surgical repair for acute Achilles tendon rupture with early motion exercise and early weight bearing. It is a retrospective study of 54 patients who underwent open repair and early rehabilitation for acute Achilles tendon rupture from January 2003 to June 2007. The average age was 40.5 years old and mean follow-up period was 20 months (12-63 months). A short leg splint was applied for an average of 14.7 days after open repair and then started motion exercise. The average duration of bracing with a ankle-foot orthosis was 7.1 weeks (5-9 weeks). We permitted partial weight bearing from 2 weeks postoperatively and full weight bearing from 4 weeks later after surgery. We assessed the outcomes using the following parameters; range of motion, single heel rasing test, calf circumference, Arner-Lindholm criteria. According to Arner-Lindholm criteria, 47 cases were grouped as excellent (87%), good in 7 cases (13%). Returning to pre injury work is possible from 42 days (27-70 days) after operation. Returning to sports activity is possible from 5.7 months (2-7 months) after operation. At the six months follow up, single heel raising was possible in every cases. Comparing to contralateral side, a little limitation of dorsiflexion was observed in 7 cases without functional limitations. Post operative complications were not found in any cases. Early joint motion exercise and early weight bearing after Achilles tendon repair showed good clinical outcomes and this treatment is recommendable.