Some parents are often at their wits’ end when they find hydrocephalus in their infants, especially when the clinical manifestations of the infant are not obvious, and they often have a fluke mentality that hydrocephalus will slowly get better on its own, especially in children with traffic hydrocephalus. This illusion is due to the physiological characteristics of the infant itself. Since the cranial suture is not closed at birth, hydrocephalus can relieve pressure by cranial suture expansion on the one hand, and by squeezing the cerebral cortex on the other hand, so the clinical manifestations seen on the surface are light, but after a long time, the cerebral cortex is severely squeezed and thinned, and brain function is gradually severely damaged, and even cerebral palsy symptoms appear, which is often irreversible. Therefore, infants found with hydrocephalus should actively go to a regular professional hospital to find an experienced doctor for treatment, do not believe in Chinese medicine prescriptions, etc. MRI is the most important test. If possible, it is best to do an MRI to understand the dynamic changes of cerebrospinal fluid flow, which can clearly distinguish between obstructive hydrocephalus or traffic hydrocephalus and the location of the obstruction, and these tests can help doctors choose the best treatment plan. In obstructive hydrocephalus, as long as the site of obstruction is not in the subarachnoid space, the best treatment is neuroendoscopic fistulotomy, which is a radical approach that effectively avoids the complications associated with shunts and, once successful, provides lifelong benefits to the patient. Does all hydrocephalus require treatment No, some patients with hydrocephalus have irreversible recovery of brain function due to the lack of effective treatment in early stages and late stages, and the intracranial pressure has reached a new state of equilibrium (intracranial pressure within the normal range), in which case brain function cannot be restored even through surgery, and this cannot be treated by shunt or fistula.