Hibernation therapy should be called artificial hibernation therapy, which is the use of drugs to put the human body in a state similar to the hibernation of animals. The purpose is to lower the metabolism of the body, reduce the excessive stress response of the body, reduce the oxygen consumption of the cells, improve microcirculation, avoid serious damage to the cells, so that the body can avoid the danger to pass the difficult time and buy time for the treatment of its original disease. It is mostly used for severe diseases that put the body in excessive stress, such as febrile convulsions caused by severe infections, tetanus or severe convulsions caused by epilepsy, severe craniocerebral trauma, central hyperthermia caused by brainstem injury, hypertensive encephalopathy or heat stroke, and high mental stress. The most commonly used drugs are chlorpromazine, promethazine and pethidine hydrochloride, the combination of which is called Dormant I.