The present invention provides a surgical device for osteotomy comprises a first body component and a second body component. The first body component has an upper guide edge and a first correcting perforation. The first correcting perforation is connected to the first body component by a first bar. The second body component has a lower guide edge and a second correcting perforation. The lower guide edge is disposed below the upper guide edge. A guide groove is formed between the upper guide edge and the lower guide edge for guiding a saw blade to perform a cutting procedure. The second correcting perforation is connected to the second body component by a second bar. A regulative angle is formed between a first hole axis of the first correcting perforation and a second hole axis of the second correcting perforation. Compared to the prior art, the present invention can improve the efficiency and accuracy of the surgery.
