For the difference between acute and subacute cerebral infarction, the main difference is the time. Acute cerebral infarction means that the patient’s onset is within 72 hours, and subacute cerebral infarction means that the patient’s onset is within 3-14 days. The difference between acute and subacute cerebral infarction includes the difference in treatment. For patients with acute cerebral infarction, if it is within 4.5 hours, thrombolytic therapy can still be administered, and the patient can be given intravenous alteplase or urokinase. For patients with subacute cerebral infarction, the time window for thrombolysis has been missed at the time of admission, and antiplatelet aggregation, anticoagulation and fibrin-lowering therapy can only be given according to the patient’s blood condition. For patients with acute and subacute cerebral infarction, they can also be treated with drugs for dehydration and lowering cranial pressure, and mannitol and glycerol fructose can be applied, so the main difference between acute and subacute cerebral infarction is the time.