Compound aminobarbital injection, mainly used for antipyretic and pain relief, is a compound preparation, and its main ingredients include aminobarbital, antipyrine and barbiturate. Among these ingredients, aminopyrine and antipyrine belong to the same class of antipyretic and analgesic drugs of the pizotone class, which can inhibit the synthesis and release of hypothalamic prostaglandins and restore the normal reflexivity of the neurons of the central thermoregulatory receptors, while playing the role of antipyretic. It can also inhibit the synthesis of prostaglandins and play an analgesic role. Aminopyrine can also inhibit the synthesis and release of prostaglandins in inflammatory tissues, stabilize lysosomal membranes, and have certain anti-inflammatory effects. Barbiturate can strengthen the analgesic effect, and is mainly used clinically for emergency antipyretic in acute hyperthermia, and also has a certain effect on the relief of headache symptoms in fever. In conclusion, compound aminobarbital injection is mainly used to reduce fever, and in addition, it can also relieve pain.