The present invention relates to an automatic cardiopulmonary resuscitation (CPR) device which, even in the middle of performing cardiopulmonary resuscitation, can measure an electrocardiogram and oxygen saturation, can measure an electroencephalogram so as to detect in real time a brain activity indicative of the degree of blood circulation in the brain, has a defibrillation function, can use a brain activity index as a CPR signal indicating the degree of cardiopulmonary resuscitation, and can remotely monitor biometric signals at a pre-hospital stage. The present invention provides a cardiopulmonary resuscitation device comprising: an electroencephalogram detection unit for detecting an electroencephalogram signal from the frontal lobe； and a calculation processing unit for detecting a brain activity index, which is used as a CPR signal indicating the degree of cardiopulmonary resuscitation, from the electroencephalogram signal received from the electroencephalogram detection unit, wherein the calculation processing unit derives, as the brain activity index, one or more of the burst suppression ratio (BSR), the beta ratio, and the SynchFastSlow (relative synchrony of fast and slow wave, SFS). The calculation processing unit eliminates noise from the electroencephalogram signal received from the electroencephalogram detection unit, and derives the beta ratio from the electroencephalogram signal, from which noise has been eliminated, using the following formula: Beta Ratio = log[spectral power (30-47 Hz)/spectral power (11-20 Hz)] (where, spectral power (30-47 Hz) denotes the spectral power in the 30-47 Hz band of the electroencephalogram, and spectral power (11-20 Hz) denotes the spectral power in the 11-20 Hz band of the electroencephalogram).La présente invention concerne un dispositif de réanimation cardiopulmonaire (RCP) automatique qui, même au milieu de la réalisation de réanimation cardiopulmonaire, peut mesurer un électrocardiogramme et la saturation en oxy
