Deep Brain Stimulation (DBS) surgery can be used in many patients with chronic neurological disorders. Now the most common usage is in Parkinson's disease but recently it is widely used in many other neurological diseases such as dystonia, obsessive compulsive disorder, tic and Tourette’s syndrome.Recently more fields of DBS surgery has been added for other chronic neurological or psychological disorders such as cluster headache, anxiety, depression, dementia and Alzheimer’s disease, epilepsy, vegetative state and also schizophrenia.Although the experience about these new fields is limited, these topics are so attractive and motivate many neuro-research centers to focus on these new fields.The author will explain the details of indications in all fields of DBS surgery and also expectations and limitations. Also more details will be discussed about clinical details of t he patients who need DBS surgery.