Patients who fall and injure their head tend to have headaches and dizziness to a greater or lesser extent, and some may experience nausea and vomiting. Treatment requires a CT scan of the skull to determine if there is any intracranial bleeding and if there is any fracture of the skull. If there is no abnormality in the skull and skull bone, vomiting is a normal stimulus reaction after trauma, no special treatment is needed, and rest or symptomatic treatment will improve the condition without any danger. If there is intracranial hemorrhage, the surrounding brain tissue has edema, vomiting may be caused by increased intracranial pressure, it is necessary to take hospitalization and dehydration, hemostasis and other treatments, if the amount of bleeding is not large, conservative treatment can be, generally does not cause life-threatening, but some patients will increase the bleeding or even need emergency craniotomy, which will have a certain degree of life-threatening.