The vast majority of patients with traumatic brain injury after head injury, will occur for a long time to varying coma, coma to return to wakefulness, in the middle of the process, there can be lethargy, turbidity, delirium, etc., the consciousness of the obstacle is light and heavy fluctuating. Moreover, there is a transient loss of consciousness after cerebral oscillation, which usually recovers within 30 minutes, and the patient may not be able to recall the scene of the injury and the moment before the injury after waking up. In addition, most patients with traumatic brain injury have headache, vomiting, dizziness, irritability, emotional instability, lack of self-confidence. Lack of attention, vegetative symptoms such as pale skin, cold sweat, decreased blood pressure, slow pulse, shallow respiration, etc., including subdural hematoma caused by traumatic brain injury can occur soon after the injury, headache and drowsiness are common. Delirium is usually referred from coma or drowsiness. In some patients, the behavior during delirium reflects pre-morbid occupational characteristics. Many patients are resistant, noisy, and uncooperative; others are more aggressive. There may be frightening hallucinations, and in severe cases there may be confusional excitement and even intense impulsive violence. Delirium may be replaced by other disturbances of consciousness, such as haze and dreamlike states. Patients with sequelae of traumatic brain injury occasionally have delirious locomotor agitation, and about half of them have optic papillae edema. Chronic subdural hematoma is characterized by lethargy, slowness, memory loss, and in severe cases, signs of generalized dementia.