Subacute cerebral infarction is a period of cerebral infarction in patients, and the subacute period is the period of about 3-7 days after the occurrence of acute cerebral infarction, and the first three days after the occurrence of cerebral infarction belong to the acute period. The treatment of cerebral infarction must be intervened as early as possible. Within 4.5 hours of the onset, intravenous thrombolysis with r-tPA can be considered, and within six hours, thrombolysis with urokinase can be considered, because thrombolysis for cerebral infarction is very effective, but the relative risk is also large, so contraindications and indications should be judged well. The treatment in the acute phase is the most critical, and the treatment in the first few hours of the onset is very good, such as the anterior circulation within three hours and the posterior circulation within 4.5 hours is the key to treatment, because the brain may be affected after a long time.