In most cases, the peak of edema after a brain hemorrhage is 7-10 days after the hemorrhage. A brain hemorrhage is a rupture of a blood vessel located inside the brain parenchyma and blood enters the brain parenchyma to form a hematoma. The hematoma compresses the brain cells, causing them to become ischemic or necrotic, resulting in edema. In some patients, cerebral edema is very serious and can cause increased intracranial pressure, headache, vomiting and other symptoms, or sudden brain herniation, which may put the patient’s life at risk. Edema after brain hemorrhage is relatively common and usually requires drug treatment. Generally, dehydration medication should be chosen according to medical advice, more common are mannitol and furosemide, hypertonic saline, etc., and can also be supplemented with albumin for treatment. Attention should also be paid to electrolytes to prevent hyponatremia and to prevent the worsening of edema. After standardized treatment, the degree of cerebral edema will gradually decrease in most patients after 10 days, and in some patients, it will completely subside in 2-4 weeks of treatment. If the edema does not improve during the course of drug treatment, surgical treatment can be considered. Usually, external ventricular drainage, intracranial hematoma removal, etc. are available, and the surgical plan needs to be determined by the doctor according to the patient’s specific condition. After a cerebral hemorrhage, patients are asked to rest in bed to avoid rebleeding, to keep their bowels open, and not to use excessive force when defecating. Keep the skin of the body dry to avoid infection. Patients should try to turn over once every 2 hours when lying in bed to prevent pressure sores. During the treatment, also pay attention to whether the patient appears drowsy, lethargic or irritable, which often indicates the possibility of brain herniation caused by cerebral edema, and the family needs to observe and inform the doctor in time for emergency treatment.