Surgical navigation system and use method thereof

The embodiment of the invention discloses a surgical navigation system. Comprising a positioning tracking module, a medical imaging device, a calibration assembly and a host, the system can use part of positioning balls for coarse registration and then use more positioning balls for fine registration based on the coarse registration, registration from a two-dimensional image to a three-dimensional space is completed, calculation is simplified, efficiency is improved, and the system is suitable for various environments. 本发明实施例公开一种手术导航系统；包括定位追踪模块，医学成像设备，标定组件，和主机，该系统可以使用部分定位球进行粗注册，然后基于粗注册，再使用更多的定位球进行精注册，完成二维图像到三维空间的注册，简化了计算，提高了效率，适用于多种环境。