Introduction: Since the introduction of robotically assisted cardiac surgery in 1997, there have been several studies on endoscopic repair of congenital cardiac defects, such as ASDs. We have done minimally invasive surgeries in selected cases of mitral valve diseases, tricuspid valve diseases, ASDs and atrial fibrillations with the AESOPTM robotic arm since December in 2005. In 2006, we performed robotically assisted surgery in a 47-year-old female with congenital PM VSD. Recently, subarterial VSD of a 12-year-old girl was successfully corrected using AESOP2000 (Automated endoscope system for optimal positioning, computer motion inc. 1996), although patient underwent reprocedure to remove postoperative hematoma. Case: Patient had 6 mm sized subarterial VSD without pulmonary hypertension. She was a 12-year-old girl and her height and weight were 165 cm and 54 kg, respectively. After induction of general anesthesia, three small incisions (ports) were made on the chest. Port 1 (1–1.5 cm) was located in the left second intercostal space on the left side of the sternum for PAtomy. Port 2 (1–1.5 cm) was located in the sixth intercostal space on a midclavicular line. Port 3 (1.5–2.0 cm) was located in the fifth intercostal space on the right midaxillary line. The CPB and ACC times were 108 minutes and 53 minutes, respectively. There were no signs of residual shunt on transesophageal echocardiogram and no complications from the cannulation sites in the femoral vein or artery and jugular vein. She has been followed up for 9 months without any problem. Conclusion: In pediatric patient with VSD, robotically assisted VSD repair is feasible as minimally invasive surgical approaches. This technique can be used as a therapeutic option for pediatric VSD.