Stroke is one of the three leading causes of death in the elderly. It is a type of disease in which the main symptom is sudden fainting, unconsciousness, with distortion of the mouth and eyes, unfavorable speech, hemiplegia or sudden onset of hemiplegia without fainting. There are two types of stroke: hemorrhagic stroke and ischemic stroke. Hemorrhagic strokes are mainly caused by the hardening and rupture of blood vessels in the brain. Ischemic stroke is a clinical manifestation of insufficient or blocked blood supply to the brain, mainly due to atherosclerotic plaques or ulcers in the extracranial or intracranial blood vessels supplying the brain, resulting in significant narrowing or occlusion of the lumen. The vast majority of patients will have some manifestations before the stroke such as suddenly dropping chopsticks while eating, suddenly having a black eye while reading the newspaper, unconsciously drooling while speaking, unconsciously wetting their pants, etc. These manifestations are collectively referred to as mini-stroke by the common people. It is medically known as transient ischemic attack, which has several characteristics: 1, transient, usually not more than 24 hours. 2, reversible, the symptoms can be returned to normal. 3. Recurrent attacks.