Dormant combination commonly includes chlorpromazine, promethazine and pethidine, but the drugs included in each of Dormant combination No. I to V are different and need to be looked at specifically. Hibernation combination is mainly used for the treatment of traumatic shock, toxic shock, hyperthermia, convulsions, etc. When used, the drugs need to be adjusted according to the patient’s age, condition and constitution, and can be used alternately with other sedative drugs, such as phenobarbital, chloral hydrate. 1. Hibernation combination No. I: including chlorpromazine, pethidine, isoprostanes; 2. Hibernation combination No. II: including pethidine, isoprostanes, hydrogenated ergometrine; 3. Hibernation combination No. III: including pethidine, isopropazine, acetylpropazine; 4, hibernation combination No. IV: including isopropazine, hydrogenated ergot alkaloids; 5, hibernation combination No. V: including chlorpromazine, isopropazine, procaine. Among them, both No. I and No. III hibernation combination can be used in patients with high fever and irritability, and should be used with caution if respiratory failure is present. Dormant combination No. II can be used in patients with tachycardia, and Dormant combination No. IV can be used in patients with respiratory failure. Dormant Combination No. V is commonly used in patients with hypuria and should be used with caution if a slow heart rate or arrhythmia is present. When using dormant combination, the patient should be kept lying down and violent position changes should be avoided to prevent the occurrence of postural shock. Attention should also be paid to the prevention of pulmonary infections, decubitus ulcers, frostbite, and other conditions, and to keeping the airway open.