Surgery for subdural hydrocephalus in babies can cure it. Commonly used surgical procedures include cerebral aqueduct formation or dilatation, etc. to relieve the cause, cerebrospinal fluid shunt, and choroid plexus resection to reduce cerebrospinal fluid production. Most newborns presenting with subdural hydrocephalus have a congenital cause. If the fluid is small and the child is able to absorb it on his or her own, surgery is not necessary. If the amount of hydrocephalus is large and seriously affects the development of the brain, surgery is recommended. 1. Release the cause of the disease: e.g. cerebral aqueduct formation or dilatation, median foramenotomy, etc. 2. Cerebrospinal fluid shunt: The purpose of cerebrospinal fluid shunt is to establish the cerebrospinal fluid circulation pathway, release the accumulation of cerebrospinal fluid, and balance the secretion and absorption of cerebrospinal fluid. 3. Reduce the production of cerebrospinal fluid: mainly choroidectomy or electrocautery of the delta of the lateral ventricle. Since cerebrospinal fluid is mainly caused by excessive secretion due to absorption disorder, this surgery is seldom applied. Patients are advised to choose the appropriate treatment method under the guidance of the doctor to avoid delaying the condition and making it worse.