Stroke is the name of a disease in Chinese medicine, which is clinically known as stroke in western medicine. It is a group of cerebrovascular diseases caused by organic brain damage, which can be divided into ischemic stroke and hemorrhagic stroke with the common clinical features of sudden onset and rapid onset of limited or diffuse cerebral functional deficits. Ischemic stroke, also known as cerebral infarction, is the most common type of stroke, accounting for about 70-80% of all strokes. It is a clinical syndrome in which the blood supply to the brain is impaired for various reasons, leading to ischemia and hypoxic necrosis of the local brain tissues, and resulting in neurological deficits such as hemiparesis, sensory impairment, and speech disadvantage. Ischemic stroke includes subtypes of atherosclerotic thrombotic cerebral infarction (thrombosis), cerebral embolism, lacunar infarction, and asymptomatic cerebral infarction. Hemorrhagic stroke, which accounts for about 20% of strokes, is a clinical syndrome in which blood vessels in the brain suddenly rupture for various reasons, resulting in brain tissue damage and neurological deficits. Hemorrhagic stroke includes cerebral hemorrhage and subarachnoid hemorrhage. Clinical symptoms of stroke are manifestations of sudden neurological deficits, with sudden limb weakness, paralysis, facial and tongue paralysis, abnormal body sensation on one side, slurred speech or hemianopsia being the most common ones, which may be accompanied by abnormal manifestations such as headache, vomiting, and unresponsiveness. Stroke is characterized by high morbidity and disability rate, and timely and standardized diagnosis and treatment is the key to save lives and reduce disability rate. In summary, stroke is a general term for a group of acute cerebrovascular diseases, which can be categorized into cerebral infarction, cerebral hemorrhage and subarachnoid hemorrhage, etc. It is often characterized by sudden onset of hemiparesis, slurred speech, facial and tongue paralysis, and other cerebral impairment symptoms, which require timely diagnosis and treatment.