The phenomenon of improvement of brainstem hemorrhage includes brain examination suggesting that the edema band is reduced, there is no further bleeding, and the clinical symptoms are improved. The brainstem consists of three parts, including medulla oblongata, cerebral bridge and midbrain, in which there are important centers for regulating cardiovascular movement, respiration, vomiting, swallowing, etc. If there is bleeding in the brainstem, dizziness and headache, vomiting, irregular respiration, hemiparesis and other symptoms may occur. Treatment requires absolute bed rest, improve the patient’s hypoxia, monitor vital signs, timely use of drugs to reduce intracranial pressure to stop bleeding and other treatments, and in more serious cases, surgery is needed to remove hematoma and reduce intracranial pressure. Brain stem hemorrhage CT performance is more typical, usually high-density shadow, the border is clear with low-density edema area, after treatment and improvement of head CT or MRI suggests that: the intracranial edema band is reduced, there is no obvious cerebral edema, and there is no rebleeding, etc.; Clinical symptoms such as dizziness and headache are reduced, there is no vomiting, hemiparesis is improved, etc.. If brain stem hemorrhage occurs, it is recommended to consult the doctor in time and standardize the treatment under the guidance of professional physicians to avoid delaying the condition.