Stem cell therapy for hemiplegia is real, the technology is in the clinical research stage and has not been widely used in clinical treatment. There are many causes of hemiplegia, and common causes include a variety of brain diseases, such as ischemic stroke and hemorrhagic stroke. Stem cells play a role in synaptogenesis in the neuronal circuits of the brain, as well as in functional electrophysiological integration, and they secrete neurotrophic factors to protect brain nerves and cells, thus alleviating hemiplegic symptoms. Patients with hemiplegia can be treated with general therapy, medication, and surgery if necessary, which can be combined with rehabilitation exercises to promote the recovery of hemiplegic limb function. When hemiplegia occurs, it is necessary to consult a doctor in time, not to use partial prescriptions, and to choose the appropriate treatment under the guidance of a doctor.