Since my hospital has been striving to build a high-level comprehensive tertiary care hospital, the ability of multi-departmental collaboration has been increasingly prominent. Recently, we successfully treated a patient with intracerebral arteriovenous malformation and intracranial hemorrhage. The patient, a Shandong resident in Beijing, was admitted to the Gastroenterology Department of our hospital due to “vomiting”, and had a sudden onset of unconsciousness, foaming at the mouth, and general convulsions with symptoms of grand mal seizure that night. The CT report of the imaging department showed that “large subdural hemorrhage on the left frontotemporal roof with significant compression of normal brain tissue”. The case was critical and immediate surgery was needed to remove the hematoma and relieve the compression of normal brain tissue. However, the hemorrhage occurred in the left dominant hemisphere of the brain and the amount of bleeding was so large that complications such as hemiplegia, aphasia, memory loss, vegetative survival, and even death due to intraoperative hemorrhage might remain after the surgery, but giving up the surgery was tantamount to giving up the patient’s young life. In a life-or-death situation, the neurosurgeons decisively decided to perform immediate craniotomy! In the current situation of extreme blood shortage in Beijing, the staff of blood transfusion department overcame the difficulties and prepared sufficient blood supply to guarantee the smooth operation. During the operation, almost the surface of the left hemisphere was covered with hematoma, the brain tissue was severely compressed, and the brain pulsation was almost completely gone, but after the hematoma was removed, an even more severe test was in front of the doctors – an intracerebral malformed vascular mass was found in the left temporal lobe, and the bleeding was fierce! Due to the extreme difficulty in stopping the bleeding of the malformed vascular mass and its deep location, there was little space in the operating field, so the slightest mistake could lead to more dangerous hemorrhage and eventually lead to the patient’s death. With the help of a surgical microscope, the neurosurgeon was able to completely remove the malformed vascular mass after nearly 9 hours of battle, with an intraoperative bleeding of about 2000 ml. After nearly two weeks of treatment, the patient has now been discharged from the hospital cured without any complications or sequelae. The successful treatment of this patient fully demonstrated the comprehensive strength of our hospital in dealing with extra heavy cranial emergencies.