This project is dedicated to the development of a medical surgery auxiliary software, using advanced technology, mainly for the attending doctors to provide assistance in bone cutting surgery. At present, the number of orthopedic patients in China continues to increase, while orthopedic doctors, especially experienced surgeons, are relatively scarce, and the doctor-patient ratio is as high as 1:10,000. Our products are software-assisted to quickly help doctors with surgical planning. This not only greatly reduces the operation time of doctors, but also helps to train more doctors and provide timely treatment for more patients.