It is not possible to determine the survival time of a patient with a 40 ml brain hemorrhage alone, but a combination of factors is needed. Patients with 40 ml brain hemorrhage need to receive timely medication and surgery, and after surgery, they need to strictly follow the doctor’s instructions to help them get through the dangerous period. If the hemorrhage site is not in an important functional area, after the surgery, the patient’s life expectancy is generally less affected. However, if the hemorrhage is in an important location such as the brain stem, the patient’s life is in great danger and may die within hours. It is recommended that patients with cerebral hemorrhage should seek medical treatment in time and under the guidance of their doctors, so as to avoid delaying the condition and causing serious consequences.