Many hydrocephalus patients experience shunt blockage after shunt surgery and have to have a second surgery. So how to avoid this situation? The following are some of my experiences: 1, the choice of shunt tube is very important, the household pivot is not worm-eaten, the flow of water does not rot, poor drainage will lead to protein deposition in the lumen, aggravating the blockage, blockage after more poor drainage, becoming a vicious circle, eventually leading to complete blockage of the drainage tube. Choose adjustable pressure shunt is right, our hospital has basically no longer apply the drainage tube can not adjust the pressure, although the cost of the first surgery materials more, but rarely blocked after surgery, and according to the condition at any time in vitro non-invasive adjustment of the drainage tube open pressure, to achieve the purpose of accurate control of the flow of “drainage valve”; 2, shunt The abdominal end of the shunt is laparoscopically placed in the abdominal cavity where there is no large omentum, which can avoid the blockage of the abdominal end caused by the large omentum wrapped around the shunt, and we have very good results.