Drugs to improve cerebral metabolism are commonly used clinically, such as olanzapine, piracetam, cytarabine sodium, cerebroprotein hydrolysate, vincristine and cerebrolysine myostatin, etc. They are generally mainly indicated for patients with ischemic and hypoxic changes in the brain. Common diseases are cerebrovascular diseases, including cerebral hemorrhage, cerebral infarction and subarachnoid hemorrhage, craniocerebral tumors, craniocerebral trauma and intracranial parasitic infections. These drugs can also be applied if the patient has seizures, such as forced symptomatic seizures that can also cause ischemia and hypoxia in the brain. Also available are infectious diseases of the central nervous system, mainly including encephalitis and meningitis, chronic cerebral ischemia and hypoxia, carbon monoxide toxic encephalopathy, and during ischemia and hypoxia. Patients mainly manifest memory loss, inattention and disordered thinking, and in severe cases, they can develop disorders of consciousness, including blurred consciousness, delirium state, and also coma, etc.