Stereotactic surgery is now widely carried out in hospitals at home and abroad where it is available, and this technique has proven to be not only safe and effective, but also minimally invasive, with a surgical incision of only 1 to 2 cm. It mainly refers to the use of stereotactic techniques to guide surgical operations for deep brain lesions or structures. The development of CT and MRI scans has made it possible for neurosurgeons to use stereotactic techniques for minimally invasive relief of intracerebral disorders. It is the application of stereometric coordinate principle, through CT and MRI images to connect the brain coordinate system with the coordinate system established by installing the directional instrument on the skull, to locate the deep brain target structure, and obtain the three-dimensional coordinate data of the target structure, according to which the surgical manipulator (such as brain needle, electrode, biopsy forceps, etc.) will be introduced into the target point to perform various operations. We can understand it this way: stereotactic surgery is the use of modern advanced imaging techniques such as CT and MRI scans to guide neurosurgery. Here advanced imaging is equivalent to scouting, and after obtaining the three-dimensional coordinates of lesions in the brain, guiding missiles to strike the enemy precisely, and minimally invasive surgery is equivalent to precision strikes. This approach clearly reduces the damage to normal tissues, while allowing the completion of the combat mission, i.e., the removal of intracerebral disorders, on time and in quantity. Stereotactic surgery can be used for precise removal of deep brain lesions such as hematomas, micro tumors and foreign bodies, as well as for precise implantation of neural stem cells, deep electrodes, etc. Therefore, stereotactic surgery can be used to treat deep brain hematomas, nuclei destruction or DBS (deep brain stimulation) for various diseases, including Parkinson’s disease, idiopathic tremor, dystonia (torsional spasm), chorea, tardive dyskinesia, and other extrapyramidal disorders, as well as psychiatric disorders (obsessive-compulsive disorder, depression, anxiety, mania, aggression, schizophrenia, etc.), and tics. It is also used to treat psychiatric disorders (obsessive-compulsive disorder, depression, anxiety, mania, aggression, schizophrenia, etc.), Tourette’s syndrome, epilepsy, drug addiction, alcohol withdrawal, pain and anorexia nervosa. It can also be used for biopsy of intracerebral lesions, targeted removal of intracranial foreign bodies, targeted capsulotomy of cystic lesions (Ommaya capsule, P32 interstitial radiotherapy), targeted neural stem cell transplantation, and guided craniotomy of deep lesions. The accuracy of stereotactic surgery can reach 1 mm, and the main complication is cerebral hemorrhage, but the chance is only 3 in 1000. Numerous cases have proven that stereotactic surgery is a minimally invasive treatment for intracerebral diseases.