Thrombolysis in stroke is generally for ischemic stroke. There are three types of thrombolysis, the first is intravenous thrombolytic therapy, the second is arterial thrombolytic therapy, and the third is arterial thrombolysis, all of which are based on the same principle. The principle is the same, because within a certain time window, the ischemic tissues are not yet completely necrotic, and there is still room for salvation, so once the blood vessels are opened again, it is very helpful for later recovery. In terms of intravenous thrombolysis, intravenous alteplase, and in some cases urokinase, can be used to dissolve newly formed clots; arterial thrombolysis involves placing a catheter to identify which artery is blocked, so that it can be placed proximal to the artery and contact thrombolysis can be performed. Sometimes arterial thrombolysis can also be applied, but it requires a higher level of skill to perform. Thrombolysis is actually the application of drugs or stents and devices to remove the embolus, which is very beneficial for later recovery.