Falling eyelids are not usually a precursor to a cerebral infarction. There are many causes of drooping eyelids, such as normal aging in the elderly resulting in drooping eyelids, which is a normal physiologic factor. In addition, it may also be caused by myasthenia gravis, motor nerve palsy, or lesions of the eyelid itself. In general, eyelid drooping is not related to cerebral infarction and therefore is not a precursor of cerebral infarction. Patients with cerebral infarction usually do not have obvious aura, and some of them may have numbness and weakness of one side of the limbs, sudden unclear speech, dizziness, blurred vision, unclear vision, etc. However, a single symptom cannot be used as a diagnosis. However, a single symptom can not be used as the basis for diagnosis of the disease, but also need to carry out a comprehensive and integrated judgment. Therefore, when patients have eyelid drop, they should go to the hospital for examination in time, and find out the cause and timely treatment with the help of doctors.