Subdural hematoma can be cured, but a small number of patients may be left with different degrees of sequelae. Subdural hematoma is divided into acute subdural hematoma and chronic subdural hematoma, acute subdural hematoma is common in car accident injuries, fall injuries and other serious craniocerebral trauma, the patient often has a history of coma, the need for emergency hematoma removal surgery, the majority of patients have a good prognosis, but a small portion of the patient will be left with varying degrees of sequelae, such as paralysis of the limbs, aphasia, epileptic seizures, memory loss, coma and so on. Chronic subdural hematoma is common in elderly patients, mainly caused by mild craniocerebral injury. The prognosis of chronic subdural hematoma is better than that of acute subdural hematoma, which is in liquid state, and only requires drilling a hole above the skull to release the hematoma, and the patients have a good prognosis after the operation.