Surgical treatment: 50% of children with congenital hydrocephalus have natural remission during the age of 2 to 5 years old, which is called resting hydrocephalus and may not require treatment. The remaining 50% of the symptoms gradually deteriorate is called progressive hydrocephalus, the skull is obviously enlarged, and the thickness of the cerebral cortex is more than 1cm, surgery can be taken, surgery can be divided into the following kinds: 1, etiological treatment removal of occupying lesions, Arnold-Chiari malformation can be posterior cranial recess and upper cervical plate decompression, the fourth ventricular atresia malformation can be four ventricular median foramen incision to release obstruction, choroid plexus resection or electrocautery to reduce cerebrospinal fluid secretion, etc. 2, cerebrospinal fluid shunts For those who cannot correct the cause and the effect of drug treatment is poor, intracranial or extracranial cerebrospinal fluid shunts can be used according to the lesion and the site of obstruction, intracranial shunts are commonly used for ventriculocerebellar medullary pool drainage and triple ventriculostomy, etc.