There is no specific value for how long a diabetic infarct can live, and it needs to be judged by a variety of factors such as the severity of the infarct. Patients with diabetic cerebral infarction may have a lower life expectancy if their blood glucose is not well controlled, or the severity of cerebral infarction is more serious, or they have more serious concomitant diseases; if their blood glucose is well controlled, and the severity of cerebral infarction is not too serious, and they actively cooperate with the doctor’s treatment, they can reach a normal life expectancy. The specific life expectancy of patients with diabetes mellitus combined with cerebral infarction cannot be generalized and needs to be judged by the doctor according to the patient’s specific situation. Patients should maintain an optimistic mindset and actively cooperate with the doctor’s treatment.