Non-surgical treatment For early or milder disease with slow progression by: (1) Applying diuretics or dehydrating agents, such as acetazolamide, dihydrocoumarol, tachyphylaxis, mannitol, etc. (2) Repeated puncture and release of fluid via the anterior chimney or lumbar spine. Surgical treatment Surgical treatment is available for progressive hydrocephalus with significantly enlarged head and cortical thickness of more than 1 cm; surgical treatment is suitable for cases with high intracerebroventricular pressure (more than 250 mm water column) or failed by non-surgical treatment. Severe hydrocephalus such as head circumference over 50cm, cortical atrophy thickness below 1cm, has been combined with serious dysfunction and deformity, surgical treatment is not effective. Surgery can be divided into the following categories: 1, surgery to reduce cerebrospinal fluid secretion: choroid plexus resection followed by cautery, which is now used sparingly. 2.Surgery to relieve the cause of ventricular obstruction: such as cerebral aqueduct formation or dilation, median foraminotomy and removal of intracranial occupying lesions, etc. 3, cerebrospinal fluid shunt: the purpose of surgery is to establish cerebrospinal fluid circulation pathway, release the accumulation of cerebrospinal fluid, both for traffic or non-traffic hydrocephalus. Commonly used shunts include lateral ventricle-cerebellar medullary pool shunt, third ventriculostomy, lateral ventricle-ventral cavity, superior sagittal sinus, atrium, external jugular vein shunt, etc. *Which patients are not suitable for surgical treatment? For patients with severe hydrocephalus, low intelligence, blindness, paralysis, and obvious atrophy of brain parenchyma, the thickness of cerebral cortex is less than 1cm, all of them are not suitable for surgery.