Craniocerebral injury grading, is based on the Glasgow score, imaging examination, comprehensive assessment before grading. 1. Mild craniocerebral injury: for example, simple concussion, not accompanied by organic brain lesions, coma time is less than 30 minutes, the patient has headache, dizziness, nausea, vomiting, etc., there is no abnormality in the cranial CT examination, and the Glasgow Score is 13~15 points. 2. Medium-sized craniocerebral injury: the coma time is not more than 12 hours, the patient has severe headache, dizziness, nausea and vomiting symptoms, Glasgow score 9~12 points. 3. Heavy craniocerebral injury: the coma time is more than 12 hours, positive signs are obvious, such as hemiplegia and aphasia. Glasgow score 3~8. The higher the grading of the injury, the more serious the condition. When craniocerebral injury occurs, you need to go to the hospital in time and actively cooperate with the doctor for treatment.