Carotid epicardial dissection, also known as peri-carotid sympathectomy, or CPS surgery, can improve the blood supply to the brain of hemiplegic patients, promote brain development, reduce the release of excitatory neurotransmitters in the brain, and regulate the excitability of nerves; clinically, it can comprehensively improve the function of the brain, reduce the muscle tone of the limbs, and facilitate symptoms such as slurred speech, unstable walking, and drooling It can improve the brain function, reduce the muscle tone of the limbs, and facilitate the relief of symptoms such as slurred speech, unsteady walking and drooling. The earliest appearance of carotid artery dissection can be traced back to more than 100 years ago, when Taboulay and later Lerche (1899) first used periarterial sympathectomy to improve peripheral blood circulation to treat foot ulcers effectively, and they found that this procedure could be widely used to treat large and small rectal occlusive diseases such as occlusive vasculitis of the limbs. Based on his predecessors Bruning proposed a procedure to remove the sympathetic nerves around the carotid artery and the superior cervical ganglion in the treatment of cerebrovascular diseases; Leriche (1952) performed periarterial sympathectomy in two cases of internal carotid artery occlusion, after which limb paralysis and speech impairment were significantly restored; Sobaeda’s (1980) performed 19 cases of chronic cerebrovascular disease caused by internal carotid artery occlusion After periarterial sympathectomy and supracarotid sympathectomy in 19 cases of chronic cerebrovascular disease caused by internal carotid artery occlusion, 60% of the patients showed significant recovery of symptoms and signs, and the surgical effect was observed to be related to the increase in cerebral blood flow. Thereafter, Suzuki (1975) and Eiji Mangamata (1980) compared the changes in cerebral blood flow with 62.5%, 44.4%, and 58% for the three surgical methods of bilateral peri-carotid sympathectomy, unilateral peri-carotid sympathectomy + contralateral superior cervical ganglion sympathectomy, and bilateral peri-carotid sympathectomy + bilateral superior cervical ganglion sympathectomy, respectively. There was no significant difference in the surgical results. In recent years, we have been the first in China to perform functional selective posterior spinal nerve rhizotomy (FSPR), common carotid artery epicranial sympathetic nerve net stripping (CPS surgery), and muscle tone and strength adjustment for hemiplegia. Both procedures have stepped into the field of microinvasive neurosurgery, providing a reliable guarantee of postoperative spinal stability and significantly shortening postoperative recovery time. At present, we have successfully treated thousands of cases of hemiplegia with carotid epiphysiodesis, and the follow-up results show that all of them are effective, and most of the patients feel that limb spasm is reduced, limb spasm and comprehensive function are improved. According to clinical statistics, the shortest time for the postoperative efficacy to appear was 1 day, and most patients began to have reduced limb spasm, improved gait, reduced or disappeared salivation, clearer speech than before, reduced or disappeared choking and coughing when eating, and different degrees of improvement in intelligence, etc. from 2 to 3 days after surgery. In addition, carotid artery episiotomy has a better therapeutic effect on the phenomenon of drooling that occurs after the onset of hemiplegia, and it also helps to improve the whole brain function in the long term, such as inflexible fingers, slurred speech, strabismus, etc. Therefore, hemiplegic patients with soft palsy, mental retardation and drooling can be treated by carotid artery episiotomy. Of course, it should be noted that CPS surgical treatment is only applicable to hemiplegic patients under 30 years of age.