Stroke refers to the obstruction or rupture of cerebral blood vessels resulting in impaired blood circulation and structural or functional damage to brain tissue. If timely recognition and active and effective treatment, the patient can be turned to safety and prevent the occurrence and progress of stroke. The main symptoms of stroke precursors are: 1. Sudden transient attacks of slanted mouth and eyes, drooling, slurred speech, difficulty in spitting out words, incomprehensible speech or incomprehensible speech, choking on water, weakness or inflexibility of one limb, unstable walking or sudden fall. This is caused by insufficient blood supply to brain tissues or bleeding damage to local functional areas. 2. Numbness of the face, tongue, lips or limbs, also manifested as dizziness, haziness in front of the eyes or blurred vision, tinnitus or hearing changes. This is due to insufficient blood supply to the brain tissue or local tissue damage affecting the sensory function of the brain. 3. Disorders of consciousness or seizures, manifesting mental depression, always wanting to sleep or being drowsy all day. The personality is also uncharacteristic, suddenly becoming silent, indifferent, slow to act or talkative, and there may also be a brief loss of consciousness or unexplained limb twitching, which is also related to cerebral ischemia. 4. General fatigue, weakness, sweating, low fever, chest tightness, palpitations or sudden onset of eructation and vomiting, which are manifestations of vegetative nerve dysfunction. 5.Headache, generally a sense of distension, may have a stiffness in the neck, which is due to the increase of intracranial pressure after brain tissue injury such as edema. Therefore, once the above precursor symptoms appear, especially in middle-aged and elderly people, they need to be especially alert. At this time, the patient must be kept quiet, rest in bed, avoid mental tension, and promptly call 120 or send to the hospital for medical treatment.