As the brain is the overall command center of the human body, it governs the work of all body functions, so there is no room for problems in the brain. However, hydrocephalus is a very common problem these days, and it can have a significant impact on your overall health. Hydrocephalus is a condition in which the cerebrospinal fluid (CSF) is produced in excess in the skull and brain, resulting in an impaired secretion of CSF, causing an enlargement of the ventricular system or the subarachnoid space. Once hydrocephalus is formed, it will do great harm to human body, and patients should be alert to the seriousness of the disease and actively go to regular hospitals to receive treatment. In clinical practice, hydrocephalus is mainly treated by surgical means. Currently, hydrocephalus shunt surgery is widely used in most general hospitals, which utilizes a shunt tube to drain the excess cerebrospinal fluid inside the ventricles of the brain to other parts of the body to be absorbed. However, conventional shunt surgery has a high incidence of post-operative complications, and serious complications can be life-threatening. What happens if hydrocephalus reappears after hydrocephalus drainage? Surgical treatment for hydrocephalus drainage is usually external and internal drainage, which is usually a temporary emergency measure, and most of them still need internal shunt, such as ventriculoperitoneal shunt surgery. After shunt surgery for hydrocephalus, hydrocephalus may reappear, which may require timely pressure adjustment and measurement. If there is no significant improvement after the adjustment, the shunt tube may be blocked or there may be other problems, which may require reconsideration of surgery.