Stroke is a group of cerebrovascular diseases caused by organic brain injury, with a sudden onset and rapid onset of limited or diffuse brain deficits as common clinical features. The clinical symptoms depend on the location of the lesion. If a large lesion occurs in the cerebral hemisphere, it is characterized by paralysis of the upper and lower extremities on the opposite side of the lesion, hemiplegia and loss of hemiplegic vision (hemianopia), often accompanied by headache, vomiting and other symptoms of cranial hypertension, and even brain herniation, which is life-threatening. If the lesion occurs in the cerebral cortex, cognitive dysfunction such as memory, speech or calculation, mental or psychiatric abnormalities may occur. If brainstem lesions occur, clinical manifestations such as impaired consciousness, tetraplegia, facial and tongue paralysis, slurred speech, headache and brain herniation may occur. If cerebellar injury occurs, symptoms such as vertigo, vomiting, unstable walking and slurred speech may occur. In addition, if the lesion is mild and small, the patient may have mild clinical symptoms and some patients may have no obvious symptoms. In summary, stroke (stroke) is a group of lesions characterized by cerebral functional deficits, and its clinical manifestations vary depending on the location of the lesions. Cerebrovascular disease is characterized by high morbidity and disability. Patients should seek timely medical attention to save brain function when they experience the above-mentioned discomfort.