In ischemic stroke, the sudden drop in blood supply to the blood vessels in the brain causes necrosis of the innervated brain cells, and the emergency treatment is mainly to open the blocked blood vessels. In clinical practice, there are three ways to treat ischemic stroke: 1, within 3-4.5 hours is the best time window, usually thrombolysis with alteplase, the patient can get very good results in the process of stroke treatment; 2, after thrombolysis can also do bridging, called cerebrovascular embolism, for thrombolysis did not dissolve the embolus can be further embolism, the recovery of stroke patients will be very helpful Many patients can be discharged from the hospital cured; 3, if within 4.5-6 hours, tend to thrombolysis with uromyosin, the effect is slightly worse