After cerebral infarction, necrosis or edema occurs in localized brain tissues, and the nerve function that innervates limb movement is impaired, manifesting malfunction or loss of function and limb weakness. Cerebral infarction is the result of various causes of brain blood supply disorders, causing brain tissue ischemia, hypoxia, necrosis, and triggering the manifestation of neurological insufficiency. The nerves innervating limb activities are motor nerves, which are innervated by the brain. When cerebral infarction occurs, local brain tissue ischemia, hypoxia, necrosis, or local brain tissue edema can not innervate the motor nerves or the innervating ability decreases, resulting in hemiplegia or weakness of limbs. Limb weakness in cerebral infarction can be partially recovered through treatment and later rehabilitation exercises, and it is recommended to have reasonable and standardized treatment under the guidance of professional doctors.