The best time for cerebral arterial thrombolysis and intravenous thrombolysis is the same. When the patient has stroke symptoms such as sudden weakness, facial paralysis, slurred speech, etc., and the time is within 4.5 hours, thrombolytic drugs can be given intravascularly to open up the blood vessels and restore blood supply to the blood-supplying areas. If the duration of the disease is more than 4.5 hours and less than 8 hours, it is the time for arterial thrombolysis, which can be performed through arterial thrombolysis, using a special stent to remove the thrombus from the occluded blood vessel to reopen the blood vessel. With the development of medical technology, the time window for vascular thrombolysis or thrombolysis can be gradually extended.