Non-traffic hydrocephalus caused by conduit occlusion, also known as obstructive hydrocephalus, can be treated by endoscopic third ventriculostomy. With the development of endoscopic technology, endoscopic aqueductoplasty and aqueduct stenting have also become effective measures for the treatment of aqueduct occlusion in recent years. The stenosis of the aqueduct causes traffic hydrocephalus, the pressure within the third ventricle increases, the supratentorial ventricle dilates, and the flow of cerebrospinal fluid in the aqueduct is accelerated, which appears as a flow hollow phenomenon on magnetic resonance. The use of endoscopic third ventricular floor fistula combined with catheteroplasty often results in good long-term outcomes.