The peak of edema 5-7 days before cerebellar infarction is also a dangerous period. Because cerebellar infarction edema can squeeze the brain stem when it is severe, patients can have respiratory and cardiac arrest, so the first week of cerebellar infarction is a dangerous period, after 1 week the patient’s condition is relatively stable. In the acute stage of cerebellar infarction, patients should be given active anti-platelet aggregation, activation of blood stasis as well as dehydration and lowering of cranial pressure, and aspirin, clopidogrel hydrogensulfate, or ozagrel sodium can be applied. At the same time with danhong injection, danshen chuanxiongxiongzine injection or injection of thrombopoietin and other drugs, to activate blood circulation and remove blood stasis, but also with mannitol, glycerol fructose, furosemide and so on. If necessary, oxygen radical scavenging and cerebroprotective drugs, such as edaravone or butylphthalide injection, can also be applied. If the cerebellar hemisphere infarction area is relatively large, debulking decompression surgery is needed if necessary.