Treatment of cerebral infarction imported potent drugs, currently in the domestic market, there are two, one is alteplase, the other is teneplase, both drugs are Boehringer Ingelheim company production. Of course, there are also generic drugs, the specific efficacy of which is not very clear without bioequivalence comparison. The main way of action of these drugs is to make the clots that block the blood vessels dissolve, so as to restore the blood flow, when the blood flow in the skull is restored the patient’s symptoms can be relieved in a short period of time, or even cured, that is to say, the special effect. However, not everyone is able to use this drug, and there are strict time limitations and contraindications for the evaluation of the use of the drug. After the patient suffers from cerebral infarction to the hospital, the doctor will be based on the onset of time, past medical history, the current examination results, etc. to determine whether it is possible to use this type of drug. If the judgment is in line with the use of this type of drug, the doctor will talk to the family, sign, and ultimately the family will decide whether to use this type of drug. Because the biggest adverse effect of this drug is bleeding, especially fatal intracranial hemorrhage, of course, the probability of bleeding is not high, but once it happens, it is very dangerous, so it needs to be signed by the family and agreed to before use.