There are many clinical causes that can cause coma. The patient’s vital signs are still normal indicating that the cerebral cortex is inhibited while the brainstem is relatively well-functioning, so the patient’s vital signs are normal, which is mainly seen in some diseases, such as common cerebral hemorrhage, cerebral infarction, ionic disorders such as hypokalemia leading to coma, hypoglycemic coma, and metabolic encephalopathy Pulmonary encephalopathy, hepatic encephalopathy, and renal encephalopathy can all cause coma symptoms. The principle of treatment for these patients is, on the one hand, to actively investigate the cause of the disease and treat the original disease; on the other hand, to maintain the patient’s water-electrolyte balance, maintain the patient’s vital signs, symptomatic treatment, and if necessary, to use soporific therapy.