Normal people do not live more than 7 days without eating or drinking. Patients with cerebral infarction have hypertension, hyperglycemia, hyperlipidemia or heart disease, so they will definitely not live more than 7 days without eating or drinking, but each person has different endurance and different basic body status, so there is no way to determine how long they can live. When a patient with cerebral infarction does not eat or drink, he or she can be given nasal feeding, nasal feeding of fluid food, increased intravenous nutrition or systemic treatment such as drip amino acids, glucose and potassium supplementation to support the patient’s vital signs, and the patient can still survive for a long time. However, if you do not care, do not eat or drink, you will definitely not survive more than 7 days, and in this case, if the infarct area is relatively large, it is usually 3-5 days.