What is neuroendoscopy? Neuroendoscopy is a “wise eye” brought to neurosurgeons by modern science and technology. The surgery is performed under endoscopic surveillance and is very delicate, lightly invasive and effective. Neuroendoscopic surgery is one of the minimally invasive techniques in neurosurgery. Minimally invasive means striving to minimize the trauma of the surgery while striving for the best outcome. What diseases can be treated by neuroendoscopy? 1, hydrocephalus: obstructive hydrocephalus, partial traffic hydrocephalus, etc. Surgery with neuroendoscopy is less traumatic, more effective, and does not require placement and replacement of shunts. 2.Intracerebral cyst, cerebral cysticercosis, cerebral abscess, lacunar cyst, etc. 3.Intracranial arachnoid cyst: lateral fissure arachnoid cyst, occipital pool cyst, suprasellar cyst, etc. 4.Pituitary tumor: endoscopic transnasal approach for resection, intraoperative operations are performed under endoscopic surveillance, safer than microsurgery, higher tumor total excision rate, less trauma, less postoperative pain for patients, and lower complications. 5.Slope chordoma, cerebrospinal fluid nasal leakage, optic nerve injury, etc. can be treated by endoscopic surgery through nasal approach. 6.Brain tumors: some intracranial gliomas can be removed by endoscopic surgery, and cholesteatoma is more conducive to complete removal under endoscopy. Some cystic tumors, such as hemangioblastoma, glial cyst and craniopharyngioma, can also be removed endoscopically. 7, chronic subdural hematoma, ventricular hemorrhage and cerebral hemorrhage: adequate hematoma removal, hemostasis, less surgical trauma and fewer postoperative complications. 8, Trigeminal neuralgia, facial muscle spasm, intractable vertigo and glossopharyngeal neuralgia can be endoscopically performed neurovascular decompression. 9.Chiari malformation: i.e., submicrocephalic tonsillar herniation malformation. Some patients combined with hydrocephalus, the third ventriculostomy can be performed; and endoscopic decompression of occipital foramen magnum can be performed with less trauma. 10, some spinal cord diseases: disc herniation spinal stenosis, etc.