Trigeminal neuralgia, also known as the first pain in the world, is a very common clinical disorder of the cranial nerves. Trigeminal neuralgia mainly manifests as paroxysmal severe pain in the distribution area of the trigeminal nerve on one side of the face. The pain is unbearable and torturous, like a knife cut, needle stabbing lightning. The trigeminal nerve, as the name implies, has three branches: the ophthalmic branch, the maxillary branch and the mandibular branch, which innervate the sensation in the corresponding areas of the face. Therefore, trigeminal neuralgia mainly manifests as pain in one or several of these three areas, with the maxillary and mandibular branches being the most common. This is why trigeminal neuralgia is often confused with dental pain. Many patients are misdiagnosed as having toothache in the early stages of the disease, and even after the tooth is extracted, the pain does not stop and recurs. Can the trigeminal nerve be cured after tooth extraction? In fact, if it is a simple toothache, the trigeminal nerve will not be affected after tooth extraction. In this case, it is likely that the trigeminal neuralgia has been misdiagnosed as toothache and has not been relieved even after tooth extraction. In this case, further examination should be performed in a timely manner, and if it is confirmed to be trigeminal neuralgia, then surgical treatment should be performed. The standard surgical treatment for trigeminal neuralgia is currently recognized by the medical community as microvascular decompression. Microvascular decompression is to make a 2~5 cm incision behind the ear, carefully explore the vascular-neural anatomical relationship of the trigeminal nerve root, find the responsible blood vessel compressing the trigeminal nerve root and release the compression, and henceforth cure the disease. This procedure is technically mature, effective, less traumatic, quick recovery and very safe.