Hydrocephalus is an increase in the volume of cerebrospinal fluid in the skull. In addition to neurological signs, mental decline or dementia is often present. Hydrocephalus is a persistent condition in which the intracranial cerebrospinal fluid stock is increased and the ventricles are enlarged due to excessive secretion or (and) impaired circulation and absorption caused by intracranial diseases. In clinical pediatric patients, enlarged head, enlarged fontanelle, tense fullness, incompatible healing of cranial suture, sunset eyes, vomiting, convulsions, language and motor disorders, and mental retardation are seen; in adults, intermittent headache, head swelling, head sinking, dizziness, tinnitus and ear blockage, vision loss, and limb weakness are seen. The vast majority of hydrocephalus requires surgical treatment, so what are the surgical treatment methods for hydrocephalus? 1.Extraventricular drainage: drainage of cerebrospinal fluid outside the body for a period of time that is not too long and is prone to intracranial infection. 2.Ventricular-abdominal shunt: permanent placement of shunt tube in the body, with tube for life, with many complications. 3.Neuroendoscopic surgery: endoscopic fistulotomy of the third ventricular floor, or other surgery, without tube placement.