After a fall on the head, usually within 3 days is the dangerous period, there may be brain hemorrhage, hematoma formation, cerebral edema, or even brain hernia. The most dangerous moment is usually within 24 hours, need to closely observe the patient’s vital signs changes, if the patient has headache, dizziness, nausea, vomiting symptoms worsen, it is necessary to actively review the CT or MRI. Generally patients needing surgery mostly within 3 days, edema reaches its peak in 5-7 days, edema begins to decrease in 10-14 days, and if there is no infection or other complications, hematoma is absorbed and cerebral edema is significantly reduced in January. Some patients may develop complications such as epilepsy, hydrocephalus, cerebral atrophy, or delayed hematoma. If these complications do not occur within 3 months, the chance of them occurring later is very low. After the hematoma is cleared, the later stages need to be combined with hyperbaric oxygen therapy and the application of nutritive neurological drugs to promote neurological recovery.