Middle cerebral artery stenosis is the result of atherosclerotic plaque formation or aortitis, muscle fiber dysplasia leading to arterial stenosis, which has a high rate of disability, and the main treatment modalities include conservative treatment or stent implantation. Symptoms of middle cerebral artery stenosis are as follows: 1. Transient ischemic attack: refers to the sudden onset of hemiparesis of one side of the limb or symptoms of speech impairment, and can be recovered within 24 hours; 2. Stroke: refers to the onset of hemiparesis of one side of the limb or symptoms of speech impairment, but can not be recovered on its own.