Transient ischemic attack is not a cerebral infarction, it is a precursor of cerebral infarction.1. Transient ischemic attack means that the patient has shown signs of transient neurological deficits, such as unclear speech, weakness of one limb, numbness, crooked mouth and tongue, etc. These symptoms will usually disappear within minutes, or hours, and generally do not exceed 24 hours.2. When cranial MRI is performed, the patient also There will be no new lesions of cerebral infarction. Cerebral infarction is a persistent symptom of the patient, and on cranial MRI, new foci of cerebral infarction associated with the patient’s symptoms will also be found, so transient ischemic attack is not cerebral infarction. However, both are acute ischemic cerebrovascular diseases, and the treatment direction is largely the same.