Cerebrospinal fluid is normally present in our brain, supplying nutrients to brain tissue, lubricating and protecting it. If the cerebrospinal fluid circulation and absorption is impaired due to some brain disease or some other factors, too much cerebrospinal fluid will accumulate and compress the brain tissue, forming hydrocephalus. In adults, hydrocephalus can cause symptoms such as dizziness, headache, nausea and vomiting, poor memory, slow reactions, and even twitching and unconsciousness. In children with hydrocephalus, the circumference of the head increases significantly, the eyes become downcast, the vision becomes blurred, and the intellectual development is affected. In fact, whether it is adult hydrocephalus or children suffering from hydrocephalus, the danger is not small and should be treated in a timely manner at a regular hospital. Currently, many hospitals use hydrocephalus bypass surgery, which is a routine procedure that uses a shunt to drain excess cerebrospinal fluid from the brain. How many years will a hydrocephalus shunt last? It usually works forever if there are no other problems. However, if there are problems after the operation, then this time is uncertain because each patient’s situation is different, especially for many traditional conventional shunt operations where the shunt becomes blocked after the operation. The chances of complications such as infection are higher, and if such problems occur then the shunt may need to be removed and re-treated. This is also a difficult problem for neurosurgeons and needs to be studied and solved.