Cerebral infarction, also called ischemic stroke, is a disease caused by a sudden decrease or cessation of local blood supply to brain tissue, which leads to ischemia and hypoxia in the corresponding brain tissue area, resulting in brain tissue necrosis and softening. The symptoms and signs of cerebral infarction are as follows: 1. Symptoms: The clinical symptoms of cerebral infarction are mainly headache, dizziness, vertigo, dysarthria, choking and coughing, dysphagia, hoarseness or loss of voice, cognitive decline, facial and upper and lower limb numbness, contralateral facial and eccentric sensory impairment, etc., which may be complicated by brain herniation in the late stage of the disease; 2. Aphasia, hypotonia, hypertonia, hyperalgesia, facial and tongue palsy, high blood pressure, high blood lipids, high blood glucose, and positive pathological signs of lower extremities, etc. In addition, there are generally more male and older patients in the clinic. If patients feel that their symptoms are consistent with the above, it is recommended to go to the hospital to improve the magnetic resonance imaging, brain CT and other examinations to clarify the cause of the disease, so that timely treatment can be carried out.