According to the current pathogenesis of neurovascular conflict (NVC), microvascular decompression (MVD) remains the current accepted treatment for intracranial vascular compression syndromes. It is a procedure that has been shown to provide long-term relief. It is a treatment method that has been proven to provide prolonged relief with maximum preservation of neurological function. I. History of MVD Dandy described in 1929 that the arterial vessels were in contact with the trigeminal nerve roots and that compression could lead to trigeminal neuralgia (TN). Jannatta developed these theories and introduced the concept of microvascular decompression (MVD) for the first time, and they also applied MVD for the first time in patients with symptoms of cranial nerve compression, such as trigeminal neuralgia (TN), hemifacial spasm (HFS), and glossopharyngeal nerve compression. HFS), glossopharyngeal neuralgia (GPN), neurogenic hypertension (NF), and primary vertigo, all of which have yielded good results. By April 1998, they had performed 4415 cases of MVD, which is often referred to as Jannetta’s operation. In 1997, Ko Y [13] et al. used MVD to treat a patient with tinnitus successfully, and in 1998, Samii M et al [14] also used this operation to treat a case of superior oblique myokymia (SOM) successfully. The MRI can clearly show the relationship between neurovascular compression, which is important for the diagnosis and treatment of surgery. range magnetic resonance angiography (3D-TOF MRA) in 564 patients from 1992 to 1998, and it is important for the selection of patients for surgery to predict the outcome of surgery. Weibang Liang et al. performed preoperative thin-section MRI scans of cranial nerves in 99 patients, and vascular nerve compression was present in 93 cases and was confirmed intraoperatively, and fine arterial compression and pearl retinal thickening were confirmed intraoperatively in another 6 cases. From the above, it can be seen that preoperative MR examination is necessary. The role of postoperative MR: Nagaseki Y et al. concluded that postoperative oblique sagittal gradient MR scan is a useful tool for follow-up of neurovascular compression at the REZ, and Chang JW et al. also concluded that postoperative MRI can be effective for postoperative follow-up. In 1992, Jannetta reported 366 cases of surgery, resulting in 215 cases (58%) with complete remission, 141 cases (39%) with partial remission, and 10 cases (3%) without remission. Patel A et al. completed MVD in 217 patients with GPN, 67% had success, 25% had improvement, and 8% still had seizures. There are many similar reports, and it can be seen that the short-term efficacy after MVD is still very good. 2. Long-term postoperative follow-up: Jannetta 1990 reported 334 patients with 12-189 months follow-up (average 68 months), 89% had complete remission, 5% had partial remission, and only 6% were ineffective, of which 10% of patients were reoperated. The cases recurred after 54 months, 2 cases were in remission 4-6 weeks after surgery but recurred after 12 months, and 2 other cases remained in remission during follow-up. Patel A followed up for 12-384 months (mean 68 months) and the results were 64% complete remission, 26% partial remission, and 10% failure, and they observed also that all patients with typical GPN achieved remission. Zhao Changdi et al. followed up 71 cases of TN due to venous compression for more than 5 years in 62 cases, none of them recurred, 6 cases did not disappear completely after surgery only significantly reduced, 2 cases were cured by gradual disappearance of pain after 2 years and 1.5 years, and the other 4 cases required a small amount of carbamazepine but could be controlled. The results of Tyler-Kabara EC et al. on 969 cases of typical TN and 672 cases of atypical TN followed up for 5 years after surgery showed that 80% of typical TN improved significantly, while only 51% of atypical TN improved, and they concluded that the long-term efficacy of MVD in treating typical TN was significantly better than that of atypical TN. there are many similar reports at home and abroad that the long-term effect of MVD is also The long-term effect of MVD is also very good.