In our skull there is water, or cerebrospinal fluid as doctors often call it, present in the ventricles, brain pools and subarachnoid space, produced by the choroid plexus within the ventricles and absorbed in the subarachnoid space. Hydrocephalus is an abnormal pathological change resulting from increased intracranial cerebrospinal fluid stock due to excessive secretion or (and) impaired circulation and absorption caused by various intracranial traumas and diseases. In clinical pediatric patients, enlarged skull, enlarged fontanelle, tense fullness, cranial suture dehiscence healing phase does not fit, sunset eyes, vomiting, convulsions, language and motor disorders, mental retardation; in adults, intermittent headache, head swelling, head sinking, dizziness, tinnitus and ear blockage, vision loss, limb weakness, etc. If normal cranial pressure hydrocephalus can appear clinical triad of signs: dementia, unsteady gait and urinary incontinence.