The amount of bleeding in patients with cerebral hemorrhage is related to the patient’s age, blood pressure, coagulation function, and the location of the patient’s hemorrhage, etc. It may be as low as a few milliliters, or as high as hundreds of milliliters. However, if the patient’s bleeding volume is large, and the bleeding site is supratentorial bleeding more than 30ml, and infratentorial bleeding more than 10ml, it is very likely that the patient will have a more serious brain hernia, and even cause the patient’s death. Therefore, the amount of bleeding in patients with cerebral hemorrhage should be analyzed and evaluated mainly in combination with the hemorrhage site of the patient as well as the patient’s basic condition, and the severity of the patient’s condition should not be determined by the amount of bleeding of the patient. Although in most cases, the more bleeding volume, the more critical the patient’s condition, but also should be combined with the patient’s bleeding site, combined with the patient’s specific clinical manifestations, such as the patient has been more obvious brain hernia symptoms, midline structural deviation, etc. to determine the patient’s specific condition.