Most of the head injuries were light and medium-sized injuries. After injury, about 0.2% to 0.7% of the light injury without skull fracture patients will be aggravated; 3.2%~10% of the patients with skull fracture will be worse. One part of the middle injury patients were brain contusion, and the symptoms of delayed intracranial hematoma occurred several days later. If these two categories of patients with obvious symptoms, then it should be hospitalized for treatment to avoid accidents. If these two categories of patients with obvious symptoms, then it should be hospitalized for treatment to avoid accidents. Severe brain injury accounts for about 20% of the brain injury, the mortality rate is very high, so it is the focus of our treatment. The death rate of patients with traumatic brain injury has been reduced by 50 percentage points, which has made remarkable progress. Another interesting discovery is that, during 1885 to 1930, the mortality of craniocerebral trauma at a rate of 3 percent for every 10 years of decline; and in 1930~1970 years mortality did not increase or decrease obviously; from 1970 to 1990, mortality decreased rapidly to average every 10 years 9.2 percentage points; and in 1990 to 2006, the platform of craniocerebral trauma mortality appears again, accounting for about 30% of the total cases. We can clearly see that there is a plateau in the mortality of brain injury after the two significant decline. After analyzing this trend, we should pay more attention to the research and treatment of 30% patients with brain trauma.