Endoscopic anterior cruciate ligament reconstruction using central one-third of bone-patellar tendon-bone autografts were performed on 76 consecutive patients. 36 patients out of them were reviewed and evaluated with subjective and functional rating scales according to the Lysholm knee scoring system, physical examination and instrumented anterior laxity test. The average follow-up was 2 years and 1 month, ranging from 1 year and 6 months to 3 years and 8 months and the everage age at operation was 31 years old, ranging from 20 to 49 years old. At follow-up, the average Lysholm knee score was 87.2 compared to the average score of 49.5 prior to reconstruction. Physical examination and instrumented anterior laxity test showed that excellent anterior stability was regained in all patients but two. There were 4 cases of complication, a fibrous nodule anterior to reconstructed ACL, an effusion of knee, a thrombophlebits, and an inadequate placement of screw fixation with protrusion of bone peg out of tibial hole. In summary, endoscopic ACL reconstruction using central 1/3 of bone-patellar tendon-bone seems to be a good procedure, which leaves less operative scar, takes short operation time and gives a constant good result as far as the surgeon is familiar with the technique.