Stereotaxis: The word stereotaxis is derived from the Greek words stereos and taxis, meaning three-dimensional and directional sequencing, respectively. As a branch of neurosurgery, stereotactic neurosurgery uses imaging positioning and directional instrumentation to place microelectrodes, puncture needles and other microscopic instruments into specific targets in the brain; diagnose and treat various conditions of the central nervous system by recording electrophysiology, retaining tissue specimens, producing destructive foci, and removing lesions. Its main features are precise localization and minimal invasiveness, and nowadays it is playing an increasingly important role in the treatment of neurosurgical diseases. Stereotactic brain surgery is a surgical technique in which a small hole is drilled in the skull and then a probe or other more delicate and complex surgical device is introduced into the brain under the guidance of a guidance system to perform biopsy, radiotherapy, and resection of the lesion site. In order to minimize damage to brain tissue while avoiding injury to important blood vessels and nerves in the brain, surgeons often determine the intracerebral lesion with the aid of a stereotaxic frame, which is fixed to the patient’s skull; then, according to their respective clinical experience, the probe is inserted into the target point according to a linear trajectory to complete the corresponding surgical operation.