There are no studies on the survival rate of cerebral infarction hemiparesis at age 90. The exact life expectancy is related to the patient’s condition, underlying disease, and care. If the patient is in good condition, he or she may live for several years; if the patient is in poor condition, the survival time may be only a few days to a few months. A 90-year-old hemiplegic patient with cerebral infarction who is well cared for, has no other complications, and has no underlying disease such as heart disease or kidney disease may survive for several years. 90-year-old hemiplegic patients with poor care, long-term bed rest often complicate lung infections, pressure sores and other diseases, coupled with their age and poor physical condition, they may easily die due to respiratory failure, systemic infections, or lack of nutrition, and their survival time may be only a few days to a few months.