The danger period after thrombolysis for cerebral infarction is about a week, especially within 24 hours. Thrombolytic therapy dissolves the thrombus that has formed, restores the circulatory function of the blood, and restores the blood supply as well as the oxygen supply to the tissues in the perfused area of the diseased vessel. Individual patients with cerebral infarction may experience bleeding and other symptoms after thrombolytic therapy, so there is often a danger period for thrombolytic therapy, which is about one week after thrombolysis, especially within 24 hours. After thrombolysis, a CT scan of the head is often required. If no intracranial hemorrhage is detected on the CT scan and the symptoms improve significantly, it means that the risk period has been successfully passed. Patients with cerebral infarction will enter a stable recovery period after passing the danger period. It is recommended that patients should change their bad habits, quit smoking and drinking, pay attention to rest, do not stay up all night, and go to the hospital for regular checkups.