Hydrocephalus is something you have heard of, but it is not what we normally call water in the brain. Hydrocephalus is a pathological problem because there is a certain amount of cerebrospinal fluid in the human brain, and if too much cerebrospinal fluid accumulates, then hydrocephalus is formed. Once hydrocephalus occurs, it is important for patients to pay attention to it and receive treatment in a timely manner. Currently, many hospitals treat hydrocephalus with advanced drainage surgery in the acute stage. But drainage takes a long time, and the risk of infection is greater. So many hospitals will perform hydrocephalus shunt surgery in a short period of time, mainly by surgically using a tube to drain the excess cerebrospinal fluid inside the brain to other parts of the body and then absorb it. However, it has been clinically verified that this conventional hydrocephalus shunt has a high failure rate and is associated with a number of complications, with a high incidence of postoperative infection and blockage of the tube. What are the risks or sequelae of hydrocephalus drainage surgery or conventional drainage surgery? This is one of the more common complications of conventional drainage of hydrocephalus or conventional shunt surgery, such as intracranial infection, intra-abdominal infection, incisional infection and infection of the subcutaneous channel of the shunt tube. 2.Insufficient shunt Some patients’ ventricles still do not shrink after receiving hydrocephalus shunt and their condition does not improve significantly, which is caused by insufficient shunt. 3.Excessive shunting Excessive shunting during surgery can induce serious problems such as lacunar ventricular syndrome and subdural hematoma. 4.Blocking of the shunt This is also a more serious complication. Whether the shunt is blocked at the ventricular end or the ventral end, it will lead to the recurrence of hydrocephalus and require a second operation, which is more painful for the patient.